Home / 136,388.91-188,302.85-100,516.44

Finding the Fourth Proportional to 136,388.91, 188,302.85 and 100,516.44

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Solution

The fourth proportional to 136,388.91, 188,302.85 and 100,516.44 is: 138,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,388.91 : 188,302.85 = 100,516.44 : x
  2. Step 2: Convert to fraction form
    136,388.91/188,302.85 = 100,516.44/x
  3. Step 3: Cross multiply
    136,388.91x = 188,302.85 × 100,516.44
  4. Step 4: Simplify right side
    136,388.91x = 18,927,532,123.85
  5. Step 5: Solve for x
    x = 18,927,532,123.85/136,388.91
  6. Step 6: Final answer
    x = 138,776.18

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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.