Home / 99,665,890.20-149,498,835.30-86,034,428.55

Finding the Fourth Proportional to 99,665,890.20, 149,498,835.30 and 86,034,428.55

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Solution

The fourth proportional to 99,665,890.20, 149,498,835.30 and 86,034,428.55 is: 129,051,642.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665,890.20 : 149,498,835.30 = 86,034,428.55 : x
  2. Step 2: Convert to fraction form
    99,665,890.20/149,498,835.30 = 86,034,428.55/x
  3. Step 3: Cross multiply
    99,665,890.20x = 149,498,835.30 × 86,034,428.55
  4. Step 4: Simplify right side
    99,665,890.20x = 12,862,046,863,926,068
  5. Step 5: Solve for x
    x = 12,862,046,863,926,068/99,665,890.20
  6. Step 6: Final answer
    x = 129,051,642.83

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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.