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Finding the Fourth Proportional to 125,360.19, 172,879.56 and 99,951.03

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Solution

The fourth proportional to 125,360.19, 172,879.56 and 99,951.03 is: 137,838.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,360.19 : 172,879.56 = 99,951.03 : x
  2. Step 2: Convert to fraction form
    125,360.19/172,879.56 = 99,951.03/x
  3. Step 3: Cross multiply
    125,360.19x = 172,879.56 × 99,951.03
  4. Step 4: Simplify right side
    125,360.19x = 17,279,490,087.95
  5. Step 5: Solve for x
    x = 17,279,490,087.95/125,360.19
  6. Step 6: Final answer
    x = 137,838.74

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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.