Home / 125,156.91-172,690.65-71,459.40

Finding the Fourth Proportional to 125,156.91, 172,690.65 and 71,459.40

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Solution

The fourth proportional to 125,156.91, 172,690.65 and 71,459.40 is: 98,599.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,156.91 : 172,690.65 = 71,459.40 : x
  2. Step 2: Convert to fraction form
    125,156.91/172,690.65 = 71,459.40/x
  3. Step 3: Cross multiply
    125,156.91x = 172,690.65 × 71,459.40
  4. Step 4: Simplify right side
    125,156.91x = 12,340,370,234.61
  5. Step 5: Solve for x
    x = 12,340,370,234.61/125,156.91
  6. Step 6: Final answer
    x = 98,599.19

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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.