Home / 84,246,475.20-126,369,712.80-72,909,067.20

Finding the Fourth Proportional to 84,246,475.20, 126,369,712.80 and 72,909,067.20

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Solution

The fourth proportional to 84,246,475.20, 126,369,712.80 and 72,909,067.20 is: 109,363,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,246,475.20 : 126,369,712.80 = 72,909,067.20 : x
  2. Step 2: Convert to fraction form
    84,246,475.20/126,369,712.80 = 72,909,067.20/x
  3. Step 3: Cross multiply
    84,246,475.20x = 126,369,712.80 × 72,909,067.20
  4. Step 4: Simplify right side
    84,246,475.20x = 9,213,497,882,579,900
  5. Step 5: Solve for x
    x = 9,213,497,882,579,900/84,246,475.20
  6. Step 6: Final answer
    x = 109,363,600.80

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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.