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Finding the Fourth Proportional to 248,101.20, 372,151.80 and 129,808.80

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Solution

The fourth proportional to 248,101.20, 372,151.80 and 129,808.80 is: 194,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,101.20 : 372,151.80 = 129,808.80 : x
  2. Step 2: Convert to fraction form
    248,101.20/372,151.80 = 129,808.80/x
  3. Step 3: Cross multiply
    248,101.20x = 372,151.80 × 129,808.80
  4. Step 4: Simplify right side
    248,101.20x = 48,308,578,575.84
  5. Step 5: Solve for x
    x = 48,308,578,575.84/248,101.20
  6. Step 6: Final answer
    x = 194,713.20

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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.