Home / 123,821.68-185,759.19-38,430.76

Finding the Fourth Proportional to 123,821.68, 185,759.19 and 38,430.76

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Solution

The fourth proportional to 123,821.68, 185,759.19 and 38,430.76 is: 57,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,821.68 : 185,759.19 = 38,430.76 : x
  2. Step 2: Convert to fraction form
    123,821.68/185,759.19 = 38,430.76/x
  3. Step 3: Cross multiply
    123,821.68x = 185,759.19 × 38,430.76
  4. Step 4: Simplify right side
    123,821.68x = 7,138,866,848.68
  5. Step 5: Solve for x
    x = 7,138,866,848.68/123,821.68
  6. Step 6: Final answer
    x = 57,654.42

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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.