Home / 99,380.28-149,070.42-68,120.76

Finding the Fourth Proportional to 99,380.28, 149,070.42 and 68,120.76

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Solution

The fourth proportional to 99,380.28, 149,070.42 and 68,120.76 is: 102,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,380.28 : 149,070.42 = 68,120.76 : x
  2. Step 2: Convert to fraction form
    99,380.28/149,070.42 = 68,120.76/x
  3. Step 3: Cross multiply
    99,380.28x = 149,070.42 × 68,120.76
  4. Step 4: Simplify right side
    99,380.28x = 10,154,790,303.92
  5. Step 5: Solve for x
    x = 10,154,790,303.92/99,380.28
  6. Step 6: Final answer
    x = 102,181.14

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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.