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Finding the Fourth Proportional to 108,710.17, 150,021.53 and 65,683.65

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Solution

The fourth proportional to 108,710.17, 150,021.53 and 65,683.65 is: 90,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,710.17 : 150,021.53 = 65,683.65 : x
  2. Step 2: Convert to fraction form
    108,710.17/150,021.53 = 65,683.65/x
  3. Step 3: Cross multiply
    108,710.17x = 150,021.53 × 65,683.65
  4. Step 4: Simplify right side
    108,710.17x = 9,853,961,668.98
  5. Step 5: Solve for x
    x = 9,853,961,668.98/108,710.17
  6. Step 6: Final answer
    x = 90,644.34

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Half scale
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Double scale
Find fourth proportional to 108,711.17, 150,022.91 and 65,684.65
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.