Home / 149,200.14-205,895.61-81,220.89

Finding the Fourth Proportional to 149,200.14, 205,895.61 and 81,220.89

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Solution

The fourth proportional to 149,200.14, 205,895.61 and 81,220.89 is: 112,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,200.14 : 205,895.61 = 81,220.89 : x
  2. Step 2: Convert to fraction form
    149,200.14/205,895.61 = 81,220.89/x
  3. Step 3: Cross multiply
    149,200.14x = 205,895.61 × 81,220.89
  4. Step 4: Simplify right side
    149,200.14x = 16,723,024,691.29
  5. Step 5: Solve for x
    x = 16,723,024,691.29/149,200.14
  6. Step 6: Final answer
    x = 112,084.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.