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Finding the Fourth Proportional to 123,417.20, 185,125.80 and 83,500.40

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Solution

The fourth proportional to 123,417.20, 185,125.80 and 83,500.40 is: 125,250.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,417.20 : 185,125.80 = 83,500.40 : x
  2. Step 2: Convert to fraction form
    123,417.20/185,125.80 = 83,500.40/x
  3. Step 3: Cross multiply
    123,417.20x = 185,125.80 × 83,500.40
  4. Step 4: Simplify right side
    123,417.20x = 15,458,078,350.32
  5. Step 5: Solve for x
    x = 15,458,078,350.32/123,417.20
  6. Step 6: Final answer
    x = 125,250.60

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