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Finding the Fourth Proportional to 123,761.60, 185,642.40 and 40,644.80

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Solution

The fourth proportional to 123,761.60, 185,642.40 and 40,644.80 is: 60,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,761.60 : 185,642.40 = 40,644.80 : x
  2. Step 2: Convert to fraction form
    123,761.60/185,642.40 = 40,644.80/x
  3. Step 3: Cross multiply
    123,761.60x = 185,642.40 × 40,644.80
  4. Step 4: Simplify right side
    123,761.60x = 7,545,398,219.52
  5. Step 5: Solve for x
    x = 7,545,398,219.52/123,761.60
  6. Step 6: Final answer
    x = 60,967.20

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1.5x scale

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.