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Finding the Fourth Proportional to 124,557.60, 186,836.40 and 123,391.20

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Solution

The fourth proportional to 124,557.60, 186,836.40 and 123,391.20 is: 185,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,557.60 : 186,836.40 = 123,391.20 : x
  2. Step 2: Convert to fraction form
    124,557.60/186,836.40 = 123,391.20/x
  3. Step 3: Cross multiply
    124,557.60x = 186,836.40 × 123,391.20
  4. Step 4: Simplify right side
    124,557.60x = 23,053,967,599.68
  5. Step 5: Solve for x
    x = 23,053,967,599.68/124,557.60
  6. Step 6: Final answer
    x = 185,086.80

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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.