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Finding the Fourth Proportional to 103,001.20, 154,501.80 and 80,882.80

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Solution

The fourth proportional to 103,001.20, 154,501.80 and 80,882.80 is: 121,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,001.20 : 154,501.80 = 80,882.80 : x
  2. Step 2: Convert to fraction form
    103,001.20/154,501.80 = 80,882.80/x
  3. Step 3: Cross multiply
    103,001.20x = 154,501.80 × 80,882.80
  4. Step 4: Simplify right side
    103,001.20x = 12,496,538,189.04
  5. Step 5: Solve for x
    x = 12,496,538,189.04/103,001.20
  6. Step 6: Final answer
    x = 121,324.20

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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.