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Finding the Fourth Proportional to 123,807.60, 185,711.40 and 122,641.20

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Solution

The fourth proportional to 123,807.60, 185,711.40 and 122,641.20 is: 183,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,807.60 : 185,711.40 = 122,641.20 : x
  2. Step 2: Convert to fraction form
    123,807.60/185,711.40 = 122,641.20/x
  3. Step 3: Cross multiply
    123,807.60x = 185,711.40 × 122,641.20
  4. Step 4: Simplify right side
    123,807.60x = 22,775,868,949.68
  5. Step 5: Solve for x
    x = 22,775,868,949.68/123,807.60
  6. Step 6: Final answer
    x = 183,961.80

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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.