Home / 138,531,134.24-191,173,189.20-76,654,080.80

Finding the Fourth Proportional to 138,531,134.24, 191,173,189.20 and 76,654,080.80

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Solution

The fourth proportional to 138,531,134.24, 191,173,189.20 and 76,654,080.80 is: 105,782,755.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,531,134.24 : 191,173,189.20 = 76,654,080.80 : x
  2. Step 2: Convert to fraction form
    138,531,134.24/191,173,189.20 = 76,654,080.80/x
  3. Step 3: Cross multiply
    138,531,134.24x = 191,173,189.20 × 76,654,080.80
  4. Step 4: Simplify right side
    138,531,134.24x = 14,654,205,091,730,486
  5. Step 5: Solve for x
    x = 14,654,205,091,730,486/138,531,134.24
  6. Step 6: Final answer
    x = 105,782,755.42

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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.