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Finding the Fourth Proportional to 127,939.60, 191,747.40 and 48,948.40

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Solution

The fourth proportional to 127,939.60, 191,747.40 and 48,948.40 is: 73,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939.60 : 191,747.40 = 48,948.40 : x
  2. Step 2: Convert to fraction form
    127,939.60/191,747.40 = 48,948.40/x
  3. Step 3: Cross multiply
    127,939.60x = 191,747.40 × 48,948.40
  4. Step 4: Simplify right side
    127,939.60x = 9,385,728,434.16
  5. Step 5: Solve for x
    x = 9,385,728,434.16/127,939.60
  6. Step 6: Final answer
    x = 73,360.62

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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.