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Finding the Fourth Proportional to 157,359.30, 235,855.89 and 89,938.55

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Solution

The fourth proportional to 157,359.30, 235,855.89 and 89,938.55 is: 134,803.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,359.30 : 235,855.89 = 89,938.55 : x
  2. Step 2: Convert to fraction form
    157,359.30/235,855.89 = 89,938.55/x
  3. Step 3: Cross multiply
    157,359.30x = 235,855.89 × 89,938.55
  4. Step 4: Simplify right side
    157,359.30x = 21,212,535,576.28
  5. Step 5: Solve for x
    x = 21,212,535,576.28/157,359.30
  6. Step 6: Final answer
    x = 134,803.19

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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.