Home / 90,660,221.70-135,990,332.55-76,630,179.30

Finding the Fourth Proportional to 90,660,221.70, 135,990,332.55 and 76,630,179.30

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Solution

The fourth proportional to 90,660,221.70, 135,990,332.55 and 76,630,179.30 is: 114,945,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,660,221.70 : 135,990,332.55 = 76,630,179.30 : x
  2. Step 2: Convert to fraction form
    90,660,221.70/135,990,332.55 = 76,630,179.30/x
  3. Step 3: Cross multiply
    90,660,221.70x = 135,990,332.55 × 76,630,179.30
  4. Step 4: Simplify right side
    90,660,221.70x = 10,420,963,566,373,126
  5. Step 5: Solve for x
    x = 10,420,963,566,373,126/90,660,221.70
  6. Step 6: Final answer
    x = 114,945,268.95

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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.