Home / 172,267.18-258,489.16-71,140.30

Finding the Fourth Proportional to 172,267.18, 258,489.16 and 71,140.30

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Solution

The fourth proportional to 172,267.18, 258,489.16 and 71,140.30 is: 106,746.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,267.18 : 258,489.16 = 71,140.30 : x
  2. Step 2: Convert to fraction form
    172,267.18/258,489.16 = 71,140.30/x
  3. Step 3: Cross multiply
    172,267.18x = 258,489.16 × 71,140.30
  4. Step 4: Simplify right side
    172,267.18x = 18,388,996,592.20
  5. Step 5: Solve for x
    x = 18,388,996,592.20/172,267.18
  6. Step 6: Final answer
    x = 106,746.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.