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Finding the Fourth Proportional to 96,315.40, 144,278.70 and 66,766.60

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Solution

The fourth proportional to 96,315.40, 144,278.70 and 66,766.60 is: 100,015.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,315.40 : 144,278.70 = 66,766.60 : x
  2. Step 2: Convert to fraction form
    96,315.40/144,278.70 = 66,766.60/x
  3. Step 3: Cross multiply
    96,315.40x = 144,278.70 × 66,766.60
  4. Step 4: Simplify right side
    96,315.40x = 9,632,998,251.42
  5. Step 5: Solve for x
    x = 9,632,998,251.42/96,315.40
  6. Step 6: Final answer
    x = 100,015.14

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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.