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Finding the Fourth Proportional to 108,781.65, 150,118.25 and 61,035.17

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Solution

The fourth proportional to 108,781.65, 150,118.25 and 61,035.17 is: 84,228.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,781.65 : 150,118.25 = 61,035.17 : x
  2. Step 2: Convert to fraction form
    108,781.65/150,118.25 = 61,035.17/x
  3. Step 3: Cross multiply
    108,781.65x = 150,118.25 × 61,035.17
  4. Step 4: Simplify right side
    108,781.65x = 9,162,491,853.09
  5. Step 5: Solve for x
    x = 9,162,491,853.09/108,781.65
  6. Step 6: Final answer
    x = 84,228.29

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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.