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Finding the Fourth Proportional to 96,515.80, 144,600.90 and 78,890.20

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Solution

The fourth proportional to 96,515.80, 144,600.90 and 78,890.20 is: 118,194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,515.80 : 144,600.90 = 78,890.20 : x
  2. Step 2: Convert to fraction form
    96,515.80/144,600.90 = 78,890.20/x
  3. Step 3: Cross multiply
    96,515.80x = 144,600.90 × 78,890.20
  4. Step 4: Simplify right side
    96,515.80x = 11,407,593,921.18
  5. Step 5: Solve for x
    x = 11,407,593,921.18/96,515.80
  6. Step 6: Final answer
    x = 118,194.06

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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.