Home / 99,665,679.60-149,498,519.40-72,791,823.60

Finding the Fourth Proportional to 99,665,679.60, 149,498,519.40 and 72,791,823.60

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Solution

The fourth proportional to 99,665,679.60, 149,498,519.40 and 72,791,823.60 is: 109,187,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665,679.60 : 149,498,519.40 = 72,791,823.60 : x
  2. Step 2: Convert to fraction form
    99,665,679.60/149,498,519.40 = 72,791,823.60/x
  3. Step 3: Cross multiply
    99,665,679.60x = 149,498,519.40 × 72,791,823.60
  4. Step 4: Simplify right side
    99,665,679.60x = 10,882,269,852,625,978
  5. Step 5: Solve for x
    x = 10,882,269,852,625,978/99,665,679.60
  6. Step 6: Final answer
    x = 109,187,735.40

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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.