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Finding the Fourth Proportional to 125,393.40, 173,042.91 and 71,679.60

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Solution

The fourth proportional to 125,393.40, 173,042.91 and 71,679.60 is: 98,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,393.40 : 173,042.91 = 71,679.60 : x
  2. Step 2: Convert to fraction form
    125,393.40/173,042.91 = 71,679.60/x
  3. Step 3: Cross multiply
    125,393.40x = 173,042.91 × 71,679.60
  4. Step 4: Simplify right side
    125,393.40x = 12,403,646,571.64
  5. Step 5: Solve for x
    x = 12,403,646,571.64/125,393.40
  6. Step 6: Final answer
    x = 98,917.86

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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.