Home / 90,001.86-123,123.20-89,622.78

Finding the Fourth Proportional to 90,001.86, 123,123.20 and 89,622.78

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Solution

The fourth proportional to 90,001.86, 123,123.20 and 89,622.78 is: 122,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,001.86 : 123,123.20 = 89,622.78 : x
  2. Step 2: Convert to fraction form
    90,001.86/123,123.20 = 89,622.78/x
  3. Step 3: Cross multiply
    90,001.86x = 123,123.20 × 89,622.78
  4. Step 4: Simplify right side
    90,001.86x = 11,034,643,466.50
  5. Step 5: Solve for x
    x = 11,034,643,466.50/90,001.86
  6. Step 6: Final answer
    x = 122,604.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.