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Finding the Fourth Proportional to 127,939.65, 191,909.30 and 34,445.49

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Solution

The fourth proportional to 127,939.65, 191,909.30 and 34,445.49 is: 51,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939.65 : 191,909.30 = 34,445.49 : x
  2. Step 2: Convert to fraction form
    127,939.65/191,909.30 = 34,445.49/x
  3. Step 3: Cross multiply
    127,939.65x = 191,909.30 × 34,445.49
  4. Step 4: Simplify right side
    127,939.65x = 6,610,409,701.83
  5. Step 5: Solve for x
    x = 6,610,409,701.83/127,939.65
  6. Step 6: Final answer
    x = 51,668.19

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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.