Home / 107,331.38-148,115.89-61,390.71

Finding the Fourth Proportional to 107,331.38, 148,115.89 and 61,390.71

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Solution

The fourth proportional to 107,331.38, 148,115.89 and 61,390.71 is: 84,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,331.38 : 148,115.89 = 61,390.71 : x
  2. Step 2: Convert to fraction form
    107,331.38/148,115.89 = 61,390.71/x
  3. Step 3: Cross multiply
    107,331.38x = 148,115.89 × 61,390.71
  4. Step 4: Simplify right side
    107,331.38x = 9,092,939,726.12
  5. Step 5: Solve for x
    x = 9,092,939,726.12/107,331.38
  6. Step 6: Final answer
    x = 84,718.37

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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.