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Finding the Fourth Proportional to 125,393.39, 173,042.90 and 71,679.59

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Solution

The fourth proportional to 125,393.39, 173,042.90 and 71,679.59 is: 98,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,393.39 : 173,042.90 = 71,679.59 : x
  2. Step 2: Convert to fraction form
    125,393.39/173,042.90 = 71,679.59/x
  3. Step 3: Cross multiply
    125,393.39x = 173,042.90 × 71,679.59
  4. Step 4: Simplify right side
    125,393.39x = 12,403,642,900.80
  5. Step 5: Solve for x
    x = 12,403,642,900.80/125,393.39
  6. Step 6: Final answer
    x = 98,917.84

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1.5x scale

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.