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Finding the Fourth Proportional to 91,151.87, 136,530.97 and 88,921.13

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Solution

The fourth proportional to 91,151.87, 136,530.97 and 88,921.13 is: 133,189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,151.87 : 136,530.97 = 88,921.13 : x
  2. Step 2: Convert to fraction form
    91,151.87/136,530.97 = 88,921.13/x
  3. Step 3: Cross multiply
    91,151.87x = 136,530.97 × 88,921.13
  4. Step 4: Simplify right side
    91,151.87x = 12,140,487,568.77
  5. Step 5: Solve for x
    x = 12,140,487,568.77/91,151.87
  6. Step 6: Final answer
    x = 133,189.67

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1.5x scale

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.