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Finding the Fourth Proportional to 163,842.40, 225,961.20 and 127,976.80

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Solution

The fourth proportional to 163,842.40, 225,961.20 and 127,976.80 is: 176,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,842.40 : 225,961.20 = 127,976.80 : x
  2. Step 2: Convert to fraction form
    163,842.40/225,961.20 = 127,976.80/x
  3. Step 3: Cross multiply
    163,842.40x = 225,961.20 × 127,976.80
  4. Step 4: Simplify right side
    163,842.40x = 28,917,791,300.16
  5. Step 5: Solve for x
    x = 28,917,791,300.16/163,842.40
  6. Step 6: Final answer
    x = 176,497.61

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1.5x scale

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.