Home / 131,121.56-180,947.50-71,505.56

Finding the Fourth Proportional to 131,121.56, 180,947.50 and 71,505.56

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Solution

The fourth proportional to 131,121.56, 180,947.50 and 71,505.56 is: 98,677.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,121.56 : 180,947.50 = 71,505.56 : x
  2. Step 2: Convert to fraction form
    131,121.56/180,947.50 = 71,505.56/x
  3. Step 3: Cross multiply
    131,121.56x = 180,947.50 × 71,505.56
  4. Step 4: Simplify right side
    131,121.56x = 12,938,752,318.10
  5. Step 5: Solve for x
    x = 12,938,752,318.10/131,121.56
  6. Step 6: Final answer
    x = 98,677.53

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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.