Home / 117,839.20-176,326.80-86,735.20

Finding the Fourth Proportional to 117,839.20, 176,326.80 and 86,735.20

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Solution

The fourth proportional to 117,839.20, 176,326.80 and 86,735.20 is: 129,784.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,839.20 : 176,326.80 = 86,735.20 : x
  2. Step 2: Convert to fraction form
    117,839.20/176,326.80 = 86,735.20/x
  3. Step 3: Cross multiply
    117,839.20x = 176,326.80 × 86,735.20
  4. Step 4: Simplify right side
    117,839.20x = 15,293,740,263.36
  5. Step 5: Solve for x
    x = 15,293,740,263.36/117,839.20
  6. Step 6: Final answer
    x = 129,784.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.