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Finding the Fourth Proportional to 172,719.60, 238,336.88 and 127,422.80

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Solution

The fourth proportional to 172,719.60, 238,336.88 and 127,422.80 is: 175,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,719.60 : 238,336.88 = 127,422.80 : x
  2. Step 2: Convert to fraction form
    172,719.60/238,336.88 = 127,422.80/x
  3. Step 3: Cross multiply
    172,719.60x = 238,336.88 × 127,422.80
  4. Step 4: Simplify right side
    172,719.60x = 30,369,552,592.86
  5. Step 5: Solve for x
    x = 30,369,552,592.86/172,719.60
  6. Step 6: Final answer
    x = 175,831.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.