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Finding the Fourth Proportional to 125,394.40, 173,044.29 and 71,680.60

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Solution

The fourth proportional to 125,394.40, 173,044.29 and 71,680.60 is: 98,919.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.40 : 173,044.29 = 71,680.60 : x
  2. Step 2: Convert to fraction form
    125,394.40/173,044.29 = 71,680.60/x
  3. Step 3: Cross multiply
    125,394.40x = 173,044.29 × 71,680.60
  4. Step 4: Simplify right side
    125,394.40x = 12,403,918,533.77
  5. Step 5: Solve for x
    x = 12,403,918,533.77/125,394.40
  6. Step 6: Final answer
    x = 98,919.24

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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.