Home / 136,332.32-188,125.20-79,732.64

Finding the Fourth Proportional to 136,332.32, 188,125.20 and 79,732.64

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Solution

The fourth proportional to 136,332.32, 188,125.20 and 79,732.64 is: 110,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,332.32 : 188,125.20 = 79,732.64 : x
  2. Step 2: Convert to fraction form
    136,332.32/188,125.20 = 79,732.64/x
  3. Step 3: Cross multiply
    136,332.32x = 188,125.20 × 79,732.64
  4. Step 4: Simplify right side
    136,332.32x = 14,999,718,846.53
  5. Step 5: Solve for x
    x = 14,999,718,846.53/136,332.32
  6. Step 6: Final answer
    x = 110,023.21

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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.