Home / 125,146.68-172,660.20-71,393.88

Finding the Fourth Proportional to 125,146.68, 172,660.20 and 71,393.88

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Solution

The fourth proportional to 125,146.68, 172,660.20 and 71,393.88 is: 98,499.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,146.68 : 172,660.20 = 71,393.88 : x
  2. Step 2: Convert to fraction form
    125,146.68/172,660.20 = 71,393.88/x
  3. Step 3: Cross multiply
    125,146.68x = 172,660.20 × 71,393.88
  4. Step 4: Simplify right side
    125,146.68x = 12,326,881,599.58
  5. Step 5: Solve for x
    x = 12,326,881,599.58/125,146.68
  6. Step 6: Final answer
    x = 98,499.47

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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.