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Finding the Fourth Proportional to 127,757.80, 191,679.38 and 56,670.65

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Solution

The fourth proportional to 127,757.80, 191,679.38 and 56,670.65 is: 85,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,757.80 : 191,679.38 = 56,670.65 : x
  2. Step 2: Convert to fraction form
    127,757.80/191,679.38 = 56,670.65/x
  3. Step 3: Cross multiply
    127,757.80x = 191,679.38 × 56,670.65
  4. Step 4: Simplify right side
    127,757.80x = 10,862,593,814.45
  5. Step 5: Solve for x
    x = 10,862,593,814.45/127,757.80
  6. Step 6: Final answer
    x = 85,024.90

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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.