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Finding the Fourth Proportional to 123,720.60, 185,570.10 and 40,614.60

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Solution

The fourth proportional to 123,720.60, 185,570.10 and 40,614.60 is: 60,918.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,720.60 : 185,570.10 = 40,614.60 : x
  2. Step 2: Convert to fraction form
    123,720.60/185,570.10 = 40,614.60/x
  3. Step 3: Cross multiply
    123,720.60x = 185,570.10 × 40,614.60
  4. Step 4: Simplify right side
    123,720.60x = 7,536,855,383.46
  5. Step 5: Solve for x
    x = 7,536,855,383.46/123,720.60
  6. Step 6: Final answer
    x = 60,918.35

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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.