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Finding the Fourth Proportional to 127,725, 191,757.06 and 109,124.52

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Solution

The fourth proportional to 127,725, 191,757.06 and 109,124.52 is: 163,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,725 : 191,757.06 = 109,124.52 : x
  2. Step 2: Convert to fraction form
    127,725/191,757.06 = 109,124.52/x
  3. Step 3: Cross multiply
    127,725x = 191,757.06 × 109,124.52
  4. Step 4: Simplify right side
    127,725x = 20,925,397,129.11
  5. Step 5: Solve for x
    x = 20,925,397,129.11/127,725
  6. Step 6: Final answer
    x = 163,831.65

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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.