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Finding the Fourth Proportional to 157,502.88, 217,351.15 and 85,881.36

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Solution

The fourth proportional to 157,502.88, 217,351.15 and 85,881.36 is: 118,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,502.88 : 217,351.15 = 85,881.36 : x
  2. Step 2: Convert to fraction form
    157,502.88/217,351.15 = 85,881.36/x
  3. Step 3: Cross multiply
    157,502.88x = 217,351.15 × 85,881.36
  4. Step 4: Simplify right side
    157,502.88x = 18,666,412,959.93
  5. Step 5: Solve for x
    x = 18,666,412,959.93/157,502.88
  6. Step 6: Final answer
    x = 118,514.74

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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.