Home / 157,514.56-217,408.80-121,649.92

Finding the Fourth Proportional to 157,514.56, 217,408.80 and 121,649.92

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Solution

The fourth proportional to 157,514.56, 217,408.80 and 121,649.92 is: 167,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,514.56 : 217,408.80 = 121,649.92 : x
  2. Step 2: Convert to fraction form
    157,514.56/217,408.80 = 121,649.92/x
  3. Step 3: Cross multiply
    157,514.56x = 217,408.80 × 121,649.92
  4. Step 4: Simplify right side
    157,514.56x = 26,447,763,127.30
  5. Step 5: Solve for x
    x = 26,447,763,127.30/157,514.56
  6. Step 6: Final answer
    x = 167,906.78

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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.