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Finding the Fourth Proportional to 96,015.70, 144,023.55 and 78,505.30

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Solution

The fourth proportional to 96,015.70, 144,023.55 and 78,505.30 is: 117,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,015.70 : 144,023.55 = 78,505.30 : x
  2. Step 2: Convert to fraction form
    96,015.70/144,023.55 = 78,505.30/x
  3. Step 3: Cross multiply
    96,015.70x = 144,023.55 × 78,505.30
  4. Step 4: Simplify right side
    96,015.70x = 11,306,611,999.82
  5. Step 5: Solve for x
    x = 11,306,611,999.82/96,015.70
  6. Step 6: Final answer
    x = 117,757.95

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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.