Home / 90,100,068-133,991,049.90-87,230,257.44

Finding the Fourth Proportional to 90,100,068, 133,991,049.90 and 87,230,257.44

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Solution

The fourth proportional to 90,100,068, 133,991,049.90 and 87,230,257.44 is: 129,723,251.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,100,068 : 133,991,049.90 = 87,230,257.44 : x
  2. Step 2: Convert to fraction form
    90,100,068/133,991,049.90 = 87,230,257.44/x
  3. Step 3: Cross multiply
    90,100,068x = 133,991,049.90 × 87,230,257.44
  4. Step 4: Simplify right side
    90,100,068x = 11,688,073,777,432,886
  5. Step 5: Solve for x
    x = 11,688,073,777,432,886/90,100,068
  6. Step 6: Final answer
    x = 129,723,251.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.