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Finding the Fourth Proportional to 80,816.80, 121,199.28 and 70,448.80

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Solution

The fourth proportional to 80,816.80, 121,199.28 and 70,448.80 is: 105,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,816.80 : 121,199.28 = 70,448.80 : x
  2. Step 2: Convert to fraction form
    80,816.80/121,199.28 = 70,448.80/x
  3. Step 3: Cross multiply
    80,816.80x = 121,199.28 × 70,448.80
  4. Step 4: Simplify right side
    80,816.80x = 8,538,343,836.86
  5. Step 5: Solve for x
    x = 8,538,343,836.86/80,816.80
  6. Step 6: Final answer
    x = 105,650.61

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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.