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Finding the Fourth Proportional to 157,231.36, 216,974.22 and 85,610.80

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Solution

The fourth proportional to 157,231.36, 216,974.22 and 85,610.80 is: 118,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,231.36 : 216,974.22 = 85,610.80 : x
  2. Step 2: Convert to fraction form
    157,231.36/216,974.22 = 85,610.80/x
  3. Step 3: Cross multiply
    157,231.36x = 216,974.22 × 85,610.80
  4. Step 4: Simplify right side
    157,231.36x = 18,575,336,553.58
  5. Step 5: Solve for x
    x = 18,575,336,553.58/157,231.36
  6. Step 6: Final answer
    x = 118,140.15

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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.