Home / 135,711.05-187,282.28-74,456.83

Finding the Fourth Proportional to 135,711.05, 187,282.28 and 74,456.83

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Solution

The fourth proportional to 135,711.05, 187,282.28 and 74,456.83 is: 102,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,711.05 : 187,282.28 = 74,456.83 : x
  2. Step 2: Convert to fraction form
    135,711.05/187,282.28 = 74,456.83/x
  3. Step 3: Cross multiply
    135,711.05x = 187,282.28 × 74,456.83
  4. Step 4: Simplify right side
    135,711.05x = 13,944,443,575.28
  5. Step 5: Solve for x
    x = 13,944,443,575.28/135,711.05
  6. Step 6: Final answer
    x = 102,750.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.