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Finding the Fourth Proportional to 157,348.96, 217,117.20 and 90,268

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Solution

The fourth proportional to 157,348.96, 217,117.20 and 90,268 is: 124,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,348.96 : 217,117.20 = 90,268 : x
  2. Step 2: Convert to fraction form
    157,348.96/217,117.20 = 90,268/x
  3. Step 3: Cross multiply
    157,348.96x = 217,117.20 × 90,268
  4. Step 4: Simplify right side
    157,348.96x = 19,598,735,409.60
  5. Step 5: Solve for x
    x = 19,598,735,409.60/157,348.96
  6. Step 6: Final answer
    x = 124,555.86

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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.