Home / 125,909.16-173,379.66-123,115.08

Finding the Fourth Proportional to 125,909.16, 173,379.66 and 123,115.08

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Solution

The fourth proportional to 125,909.16, 173,379.66 and 123,115.08 is: 169,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,909.16 : 173,379.66 = 123,115.08 : x
  2. Step 2: Convert to fraction form
    125,909.16/173,379.66 = 123,115.08/x
  3. Step 3: Cross multiply
    125,909.16x = 173,379.66 × 123,115.08
  4. Step 4: Simplify right side
    125,909.16x = 21,345,650,711.27
  5. Step 5: Solve for x
    x = 21,345,650,711.27/125,909.16
  6. Step 6: Final answer
    x = 169,532.15

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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.