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Finding the Fourth Proportional to 125,881.40, 173,702.08 and 74,195.12

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Solution

The fourth proportional to 125,881.40, 173,702.08 and 74,195.12 is: 102,380.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,881.40 : 173,702.08 = 74,195.12 : x
  2. Step 2: Convert to fraction form
    125,881.40/173,702.08 = 74,195.12/x
  3. Step 3: Cross multiply
    125,881.40x = 173,702.08 × 74,195.12
  4. Step 4: Simplify right side
    125,881.40x = 12,887,846,669.85
  5. Step 5: Solve for x
    x = 12,887,846,669.85/125,881.40
  6. Step 6: Final answer
    x = 102,380.87

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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.