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Finding the Fourth Proportional to 125,314.64, 187,896.89 and 39,888.59

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Solution

The fourth proportional to 125,314.64, 187,896.89 and 39,888.59 is: 59,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,314.64 : 187,896.89 = 39,888.59 : x
  2. Step 2: Convert to fraction form
    125,314.64/187,896.89 = 39,888.59/x
  3. Step 3: Cross multiply
    125,314.64x = 187,896.89 × 39,888.59
  4. Step 4: Simplify right side
    125,314.64x = 7,494,940,868.56
  5. Step 5: Solve for x
    x = 7,494,940,868.56/125,314.64
  6. Step 6: Final answer
    x = 59,808.98

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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.