Home / 129,884,543.28-179,172,714.52-80,309,069.60

Finding the Fourth Proportional to 129,884,543.28, 179,172,714.52 and 80,309,069.60

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Solution

The fourth proportional to 129,884,543.28, 179,172,714.52 and 80,309,069.60 is: 110,784,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,884,543.28 : 179,172,714.52 = 80,309,069.60 : x
  2. Step 2: Convert to fraction form
    129,884,543.28/179,172,714.52 = 80,309,069.60/x
  3. Step 3: Cross multiply
    129,884,543.28x = 179,172,714.52 × 80,309,069.60
  4. Step 4: Simplify right side
    129,884,543.28x = 14,389,194,000,012,134
  5. Step 5: Solve for x
    x = 14,389,194,000,012,134/129,884,543.28
  6. Step 6: Final answer
    x = 110,784,498.58

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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.