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Finding the Fourth Proportional to 136,357.92, 188,113.20 and 79,744.32

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Solution

The fourth proportional to 136,357.92, 188,113.20 and 79,744.32 is: 110,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,357.92 : 188,113.20 = 79,744.32 : x
  2. Step 2: Convert to fraction form
    136,357.92/188,113.20 = 79,744.32/x
  3. Step 3: Cross multiply
    136,357.92x = 188,113.20 × 79,744.32
  4. Step 4: Simplify right side
    136,357.92x = 15,000,959,217.02
  5. Step 5: Solve for x
    x = 15,000,959,217.02/136,357.92
  6. Step 6: Final answer
    x = 110,011.65

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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.