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Finding the Fourth Proportional to 99,921.60, 149,882.40 and 96,422.40

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Solution

The fourth proportional to 99,921.60, 149,882.40 and 96,422.40 is: 144,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.60 : 149,882.40 = 96,422.40 : x
  2. Step 2: Convert to fraction form
    99,921.60/149,882.40 = 96,422.40/x
  3. Step 3: Cross multiply
    99,921.60x = 149,882.40 × 96,422.40
  4. Step 4: Simplify right side
    99,921.60x = 14,452,020,725.76
  5. Step 5: Solve for x
    x = 14,452,020,725.76/99,921.60
  6. Step 6: Final answer
    x = 144,633.60

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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.