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Finding the Fourth Proportional to 179,397.78, 247,570.20 and 102,920.22

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Solution

The fourth proportional to 179,397.78, 247,570.20 and 102,920.22 is: 142,030.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,397.78 : 247,570.20 = 102,920.22 : x
  2. Step 2: Convert to fraction form
    179,397.78/247,570.20 = 102,920.22/x
  3. Step 3: Cross multiply
    179,397.78x = 247,570.20 × 102,920.22
  4. Step 4: Simplify right side
    179,397.78x = 25,479,979,449.44
  5. Step 5: Solve for x
    x = 25,479,979,449.44/179,397.78
  6. Step 6: Final answer
    x = 142,030.63

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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.