Home / 123,920.28-185,788.89-39,631.68

Finding the Fourth Proportional to 123,920.28, 185,788.89 and 39,631.68

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Solution

The fourth proportional to 123,920.28, 185,788.89 and 39,631.68 is: 59,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,920.28 : 185,788.89 = 39,631.68 : x
  2. Step 2: Convert to fraction form
    123,920.28/185,788.89 = 39,631.68/x
  3. Step 3: Cross multiply
    123,920.28x = 185,788.89 × 39,631.68
  4. Step 4: Simplify right side
    123,920.28x = 7,363,125,836.04
  5. Step 5: Solve for x
    x = 7,363,125,836.04/123,920.28
  6. Step 6: Final answer
    x = 59,418.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.