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Finding the Fourth Proportional to 96,571.76, 144,552.56 and 86,415.80

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Solution

The fourth proportional to 96,571.76, 144,552.56 and 86,415.80 is: 129,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,571.76 : 144,552.56 = 86,415.80 : x
  2. Step 2: Convert to fraction form
    96,571.76/144,552.56 = 86,415.80/x
  3. Step 3: Cross multiply
    96,571.76x = 144,552.56 × 86,415.80
  4. Step 4: Simplify right side
    96,571.76x = 12,491,625,114.45
  5. Step 5: Solve for x
    x = 12,491,625,114.45/96,571.76
  6. Step 6: Final answer
    x = 129,350.70

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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.