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Finding the Fourth Proportional to 123,997.60, 185,996.40 and 45,114.40

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Solution

The fourth proportional to 123,997.60, 185,996.40 and 45,114.40 is: 67,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,997.60 : 185,996.40 = 45,114.40 : x
  2. Step 2: Convert to fraction form
    123,997.60/185,996.40 = 45,114.40/x
  3. Step 3: Cross multiply
    123,997.60x = 185,996.40 × 45,114.40
  4. Step 4: Simplify right side
    123,997.60x = 8,391,115,988.16
  5. Step 5: Solve for x
    x = 8,391,115,988.16/123,997.60
  6. Step 6: Final answer
    x = 67,671.60

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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.