Home / 145,115.60-217,553.43-55,139.69

Finding the Fourth Proportional to 145,115.60, 217,553.43 and 55,139.69

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Solution

The fourth proportional to 145,115.60, 217,553.43 and 55,139.69 is: 82,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,115.60 : 217,553.43 = 55,139.69 : x
  2. Step 2: Convert to fraction form
    145,115.60/217,553.43 = 55,139.69/x
  3. Step 3: Cross multiply
    145,115.60x = 217,553.43 × 55,139.69
  4. Step 4: Simplify right side
    145,115.60x = 11,995,827,600.87
  5. Step 5: Solve for x
    x = 11,995,827,600.87/145,115.60
  6. Step 6: Final answer
    x = 82,663.95

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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.