Home / 151,780.20-227,816.10-76,984.80

Finding the Fourth Proportional to 151,780.20, 227,816.10 and 76,984.80

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Solution

The fourth proportional to 151,780.20, 227,816.10 and 76,984.80 is: 115,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,780.20 : 227,816.10 = 76,984.80 : x
  2. Step 2: Convert to fraction form
    151,780.20/227,816.10 = 76,984.80/x
  3. Step 3: Cross multiply
    151,780.20x = 227,816.10 × 76,984.80
  4. Step 4: Simplify right side
    151,780.20x = 17,538,376,895.28
  5. Step 5: Solve for x
    x = 17,538,376,895.28/151,780.20
  6. Step 6: Final answer
    x = 115,551.15

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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.