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Finding the Fourth Proportional to 125,955.99, 173,835.15 and 72,239.85

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Solution

The fourth proportional to 125,955.99, 173,835.15 and 72,239.85 is: 99,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,955.99 : 173,835.15 = 72,239.85 : x
  2. Step 2: Convert to fraction form
    125,955.99/173,835.15 = 72,239.85/x
  3. Step 3: Cross multiply
    125,955.99x = 173,835.15 × 72,239.85
  4. Step 4: Simplify right side
    125,955.99x = 12,557,825,160.73
  5. Step 5: Solve for x
    x = 12,557,825,160.73/125,955.99
  6. Step 6: Final answer
    x = 99,700.10

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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.