Home / 136,717.92-188,665.20-79,358.40

Finding the Fourth Proportional to 136,717.92, 188,665.20 and 79,358.40

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Solution

The fourth proportional to 136,717.92, 188,665.20 and 79,358.40 is: 109,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.92 : 188,665.20 = 79,358.40 : x
  2. Step 2: Convert to fraction form
    136,717.92/188,665.20 = 79,358.40/x
  3. Step 3: Cross multiply
    136,717.92x = 188,665.20 × 79,358.40
  4. Step 4: Simplify right side
    136,717.92x = 14,972,168,407.68
  5. Step 5: Solve for x
    x = 14,972,168,407.68/136,717.92
  6. Step 6: Final answer
    x = 109,511.38

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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.