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Finding the Fourth Proportional to 157,640.80, 236,461.20 and 98,591.80

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Solution

The fourth proportional to 157,640.80, 236,461.20 and 98,591.80 is: 147,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,640.80 : 236,461.20 = 98,591.80 : x
  2. Step 2: Convert to fraction form
    157,640.80/236,461.20 = 98,591.80/x
  3. Step 3: Cross multiply
    157,640.80x = 236,461.20 × 98,591.80
  4. Step 4: Simplify right side
    157,640.80x = 23,313,135,338.16
  5. Step 5: Solve for x
    x = 23,313,135,338.16/157,640.80
  6. Step 6: Final answer
    x = 147,887.70

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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.