Home / 136,660.24-188,583-79,295.12

Finding the Fourth Proportional to 136,660.24, 188,583 and 79,295.12

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Solution

The fourth proportional to 136,660.24, 188,583 and 79,295.12 is: 109,422.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,660.24 : 188,583 = 79,295.12 : x
  2. Step 2: Convert to fraction form
    136,660.24/188,583 = 79,295.12/x
  3. Step 3: Cross multiply
    136,660.24x = 188,583 × 79,295.12
  4. Step 4: Simplify right side
    136,660.24x = 14,953,711,614.96
  5. Step 5: Solve for x
    x = 14,953,711,614.96/136,660.24
  6. Step 6: Final answer
    x = 109,422.55

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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.