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Finding the Fourth Proportional to 162,193.44, 243,342.20 and 77,959.72

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Solution

The fourth proportional to 162,193.44, 243,342.20 and 77,959.72 is: 116,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,193.44 : 243,342.20 = 77,959.72 : x
  2. Step 2: Convert to fraction form
    162,193.44/243,342.20 = 77,959.72/x
  3. Step 3: Cross multiply
    162,193.44x = 243,342.20 × 77,959.72
  4. Step 4: Simplify right side
    162,193.44x = 18,970,888,559.47
  5. Step 5: Solve for x
    x = 18,970,888,559.47/162,193.44
  6. Step 6: Final answer
    x = 116,964.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.