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Finding the Fourth Proportional to 163,642.32, 225,824.96 and 92,020.80

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Solution

The fourth proportional to 163,642.32, 225,824.96 and 92,020.80 is: 126,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,642.32 : 225,824.96 = 92,020.80 : x
  2. Step 2: Convert to fraction form
    163,642.32/225,824.96 = 92,020.80/x
  3. Step 3: Cross multiply
    163,642.32x = 225,824.96 × 92,020.80
  4. Step 4: Simplify right side
    163,642.32x = 20,780,593,479.17
  5. Step 5: Solve for x
    x = 20,780,593,479.17/163,642.32
  6. Step 6: Final answer
    x = 126,987.89

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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.