Home / 105,387.12-145,439.55-62,391.29

Finding the Fourth Proportional to 105,387.12, 145,439.55 and 62,391.29

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Solution

The fourth proportional to 105,387.12, 145,439.55 and 62,391.29 is: 86,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,387.12 : 145,439.55 = 62,391.29 : x
  2. Step 2: Convert to fraction form
    105,387.12/145,439.55 = 62,391.29/x
  3. Step 3: Cross multiply
    105,387.12x = 145,439.55 × 62,391.29
  4. Step 4: Simplify right side
    105,387.12x = 9,074,160,414.32
  5. Step 5: Solve for x
    x = 9,074,160,414.32/105,387.12
  6. Step 6: Final answer
    x = 86,103.13

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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.