Home / 117,784.20-176,244.30-86,680.20

Finding the Fourth Proportional to 117,784.20, 176,244.30 and 86,680.20

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Solution

The fourth proportional to 117,784.20, 176,244.30 and 86,680.20 is: 129,702.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,784.20 : 176,244.30 = 86,680.20 : x
  2. Step 2: Convert to fraction form
    117,784.20/176,244.30 = 86,680.20/x
  3. Step 3: Cross multiply
    117,784.20x = 176,244.30 × 86,680.20
  4. Step 4: Simplify right side
    117,784.20x = 15,276,891,172.86
  5. Step 5: Solve for x
    x = 15,276,891,172.86/117,784.20
  6. Step 6: Final answer
    x = 129,702.38

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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.