Home / 125,839.05-173,665.38-72,127.55

Finding the Fourth Proportional to 125,839.05, 173,665.38 and 72,127.55

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Solution

The fourth proportional to 125,839.05, 173,665.38 and 72,127.55 is: 99,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,839.05 : 173,665.38 = 72,127.55 : x
  2. Step 2: Convert to fraction form
    125,839.05/173,665.38 = 72,127.55/x
  3. Step 3: Cross multiply
    125,839.05x = 173,665.38 × 72,127.55
  4. Step 4: Simplify right side
    125,839.05x = 12,526,058,379.22
  5. Step 5: Solve for x
    x = 12,526,058,379.22/125,839.05
  6. Step 6: Final answer
    x = 99,540.31

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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.