Home / 125,101.12-172,630.56-68,503.36

Finding the Fourth Proportional to 125,101.12, 172,630.56 and 68,503.36

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Solution

The fourth proportional to 125,101.12, 172,630.56 and 68,503.36 is: 94,529.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,101.12 : 172,630.56 = 68,503.36 : x
  2. Step 2: Convert to fraction form
    125,101.12/172,630.56 = 68,503.36/x
  3. Step 3: Cross multiply
    125,101.12x = 172,630.56 × 68,503.36
  4. Step 4: Simplify right side
    125,101.12x = 11,825,773,398.68
  5. Step 5: Solve for x
    x = 11,825,773,398.68/125,101.12
  6. Step 6: Final answer
    x = 94,529.72

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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.