Home / 99,790.20-149,685.30-66,110.40

Finding the Fourth Proportional to 99,790.20, 149,685.30 and 66,110.40

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Solution

The fourth proportional to 99,790.20, 149,685.30 and 66,110.40 is: 99,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,790.20 : 149,685.30 = 66,110.40 : x
  2. Step 2: Convert to fraction form
    99,790.20/149,685.30 = 66,110.40/x
  3. Step 3: Cross multiply
    99,790.20x = 149,685.30 × 66,110.40
  4. Step 4: Simplify right side
    99,790.20x = 9,895,755,057.12
  5. Step 5: Solve for x
    x = 9,895,755,057.12/99,790.20
  6. Step 6: Final answer
    x = 99,165.60

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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.