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Finding the Fourth Proportional to 123,860.40, 185,790.60 and 89,127.60

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Solution

The fourth proportional to 123,860.40, 185,790.60 and 89,127.60 is: 133,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,860.40 : 185,790.60 = 89,127.60 : x
  2. Step 2: Convert to fraction form
    123,860.40/185,790.60 = 89,127.60/x
  3. Step 3: Cross multiply
    123,860.40x = 185,790.60 × 89,127.60
  4. Step 4: Simplify right side
    123,860.40x = 16,559,070,280.56
  5. Step 5: Solve for x
    x = 16,559,070,280.56/123,860.40
  6. Step 6: Final answer
    x = 133,691.40

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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.