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Finding the Fourth Proportional to 125,315.78, 187,927.39 and 54,248.77

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Solution

The fourth proportional to 125,315.78, 187,927.39 and 54,248.77 is: 81,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,315.78 : 187,927.39 = 54,248.77 : x
  2. Step 2: Convert to fraction form
    125,315.78/187,927.39 = 54,248.77/x
  3. Step 3: Cross multiply
    125,315.78x = 187,927.39 × 54,248.77
  4. Step 4: Simplify right side
    125,315.78x = 10,194,830,059.53
  5. Step 5: Solve for x
    x = 10,194,830,059.53/125,315.78
  6. Step 6: Final answer
    x = 81,353.13

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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.