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Finding the Fourth Proportional to 157,358.57, 235,757.99 and 90,660.89

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Solution

The fourth proportional to 157,358.57, 235,757.99 and 90,660.89 is: 135,830.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,358.57 : 235,757.99 = 90,660.89 : x
  2. Step 2: Convert to fraction form
    157,358.57/235,757.99 = 90,660.89/x
  3. Step 3: Cross multiply
    157,358.57x = 235,757.99 × 90,660.89
  4. Step 4: Simplify right side
    157,358.57x = 21,374,030,014.06
  5. Step 5: Solve for x
    x = 21,374,030,014.06/157,358.57
  6. Step 6: Final answer
    x = 135,830.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.