Home / 131,768-181,839.77-71,338.60

Finding the Fourth Proportional to 131,768, 181,839.77 and 71,338.60

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Solution

The fourth proportional to 131,768, 181,839.77 and 71,338.60 is: 98,447.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,768 : 181,839.77 = 71,338.60 : x
  2. Step 2: Convert to fraction form
    131,768/181,839.77 = 71,338.60/x
  3. Step 3: Cross multiply
    131,768x = 181,839.77 × 71,338.60
  4. Step 4: Simplify right side
    131,768x = 12,972,194,616.12
  5. Step 5: Solve for x
    x = 12,972,194,616.12/131,768
  6. Step 6: Final answer
    x = 98,447.23

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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.