Home / 130,982.50-180,755.85-71,366.50

Finding the Fourth Proportional to 130,982.50, 180,755.85 and 71,366.50

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Solution

The fourth proportional to 130,982.50, 180,755.85 and 71,366.50 is: 98,485.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,982.50 : 180,755.85 = 71,366.50 : x
  2. Step 2: Convert to fraction form
    130,982.50/180,755.85 = 71,366.50/x
  3. Step 3: Cross multiply
    130,982.50x = 180,755.85 × 71,366.50
  4. Step 4: Simplify right side
    130,982.50x = 12,899,912,369.03
  5. Step 5: Solve for x
    x = 12,899,912,369.03/130,982.50
  6. Step 6: Final answer
    x = 98,485.77

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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.