Home / 125,107.32-172,605.21-71,353.68

Finding the Fourth Proportional to 125,107.32, 172,605.21 and 71,353.68

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Solution

The fourth proportional to 125,107.32, 172,605.21 and 71,353.68 is: 98,443.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,107.32 : 172,605.21 = 71,353.68 : x
  2. Step 2: Convert to fraction form
    125,107.32/172,605.21 = 71,353.68/x
  3. Step 3: Cross multiply
    125,107.32x = 172,605.21 × 71,353.68
  4. Step 4: Simplify right side
    125,107.32x = 12,316,016,920.67
  5. Step 5: Solve for x
    x = 12,316,016,920.67/125,107.32
  6. Step 6: Final answer
    x = 98,443.62

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1.5x scale

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.