Home / 137,713.20-190,084.92-81,142.80

Finding the Fourth Proportional to 137,713.20, 190,084.92 and 81,142.80

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Solution

The fourth proportional to 137,713.20, 190,084.92 and 81,142.80 is: 112,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,713.20 : 190,084.92 = 81,142.80 : x
  2. Step 2: Convert to fraction form
    137,713.20/190,084.92 = 81,142.80/x
  3. Step 3: Cross multiply
    137,713.20x = 190,084.92 × 81,142.80
  4. Step 4: Simplify right side
    137,713.20x = 15,424,022,646.58
  5. Step 5: Solve for x
    x = 15,424,022,646.58/137,713.20
  6. Step 6: Final answer
    x = 112,001.05

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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.