Home / 99,665,628.60-149,498,442.90-72,791,772.60

Finding the Fourth Proportional to 99,665,628.60, 149,498,442.90 and 72,791,772.60

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Solution

The fourth proportional to 99,665,628.60, 149,498,442.90 and 72,791,772.60 is: 109,187,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,665,628.60 : 149,498,442.90 = 72,791,772.60 : x
  2. Step 2: Convert to fraction form
    99,665,628.60/149,498,442.90 = 72,791,772.60/x
  3. Step 3: Cross multiply
    99,665,628.60x = 149,498,442.90 × 72,791,772.60
  4. Step 4: Simplify right side
    99,665,628.60x = 10,882,256,659,630,884
  5. Step 5: Solve for x
    x = 10,882,256,659,630,884/99,665,628.60
  6. Step 6: Final answer
    x = 109,187,658.90

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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.