Home / 125,171.11-187,712.45-54,090.87

Finding the Fourth Proportional to 125,171.11, 187,712.45 and 54,090.87

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Solution

The fourth proportional to 125,171.11, 187,712.45 and 54,090.87 is: 81,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,171.11 : 187,712.45 = 54,090.87 : x
  2. Step 2: Convert to fraction form
    125,171.11/187,712.45 = 54,090.87/x
  3. Step 3: Cross multiply
    125,171.11x = 187,712.45 × 54,090.87
  4. Step 4: Simplify right side
    125,171.11x = 10,153,530,318.94
  5. Step 5: Solve for x
    x = 10,153,530,318.94/125,171.11
  6. Step 6: Final answer
    x = 81,117.21

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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.