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Finding the Fourth Proportional to 163,479.76, 225,589.80 and 91,848.40

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Solution

The fourth proportional to 163,479.76, 225,589.80 and 91,848.40 is: 126,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,479.76 : 225,589.80 = 91,848.40 : x
  2. Step 2: Convert to fraction form
    163,479.76/225,589.80 = 91,848.40/x
  3. Step 3: Cross multiply
    163,479.76x = 225,589.80 × 91,848.40
  4. Step 4: Simplify right side
    163,479.76x = 20,720,062,186.32
  5. Step 5: Solve for x
    x = 20,720,062,186.32/163,479.76
  6. Step 6: Final answer
    x = 126,743.90

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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.