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Finding the Fourth Proportional to 157,885.32, 217,881.46 and 90,829.96

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Solution

The fourth proportional to 157,885.32, 217,881.46 and 90,829.96 is: 125,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,885.32 : 217,881.46 = 90,829.96 : x
  2. Step 2: Convert to fraction form
    157,885.32/217,881.46 = 90,829.96/x
  3. Step 3: Cross multiply
    157,885.32x = 217,881.46 × 90,829.96
  4. Step 4: Simplify right side
    157,885.32x = 19,790,164,296.54
  5. Step 5: Solve for x
    x = 19,790,164,296.54/157,885.32
  6. Step 6: Final answer
    x = 125,345.18

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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.