Home / 90,990,156.30-136,485,234.45-90,423,285.90

Finding the Fourth Proportional to 90,990,156.30, 136,485,234.45 and 90,423,285.90

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Solution

The fourth proportional to 90,990,156.30, 136,485,234.45 and 90,423,285.90 is: 135,634,928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,990,156.30 : 136,485,234.45 = 90,423,285.90 : x
  2. Step 2: Convert to fraction form
    90,990,156.30/136,485,234.45 = 90,423,285.90/x
  3. Step 3: Cross multiply
    90,990,156.30x = 136,485,234.45 × 90,423,285.90
  4. Step 4: Simplify right side
    90,990,156.30x = 12,341,443,375,800,878
  5. Step 5: Solve for x
    x = 12,341,443,375,800,878/90,990,156.30
  6. Step 6: Final answer
    x = 135,634,928.85

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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.