Home / 125,344.40-172,964.28-71,618.72

Finding the Fourth Proportional to 125,344.40, 172,964.28 and 71,618.72

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Solution

The fourth proportional to 125,344.40, 172,964.28 and 71,618.72 is: 98,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,344.40 : 172,964.28 = 71,618.72 : x
  2. Step 2: Convert to fraction form
    125,344.40/172,964.28 = 71,618.72/x
  3. Step 3: Cross multiply
    125,344.40x = 172,964.28 × 71,618.72
  4. Step 4: Simplify right side
    125,344.40x = 12,387,480,339.32
  5. Step 5: Solve for x
    x = 12,387,480,339.32/125,344.40
  6. Step 6: Final answer
    x = 98,827.55

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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.