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Finding the Fourth Proportional to 118,359.10, 163,339.09 and 64,646.65

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Solution

The fourth proportional to 118,359.10, 163,339.09 and 64,646.65 is: 89,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,359.10 : 163,339.09 = 64,646.65 : x
  2. Step 2: Convert to fraction form
    118,359.10/163,339.09 = 64,646.65/x
  3. Step 3: Cross multiply
    118,359.10x = 163,339.09 × 64,646.65
  4. Step 4: Simplify right side
    118,359.10x = 10,559,324,982.55
  5. Step 5: Solve for x
    x = 10,559,324,982.55/118,359.10
  6. Step 6: Final answer
    x = 89,214.31

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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.