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Finding the Fourth Proportional to 157,320.62, 235,797.80 and 89,899.90

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Solution

The fourth proportional to 157,320.62, 235,797.80 and 89,899.90 is: 134,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,320.62 : 235,797.80 = 89,899.90 : x
  2. Step 2: Convert to fraction form
    157,320.62/235,797.80 = 89,899.90/x
  3. Step 3: Cross multiply
    157,320.62x = 235,797.80 × 89,899.90
  4. Step 4: Simplify right side
    157,320.62x = 21,198,198,640.22
  5. Step 5: Solve for x
    x = 21,198,198,640.22/157,320.62
  6. Step 6: Final answer
    x = 134,745.20

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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.