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Finding the Fourth Proportional to 149,957.60, 224,900.40 and 86,640.80

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Solution

The fourth proportional to 149,957.60, 224,900.40 and 86,640.80 is: 129,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,957.60 : 224,900.40 = 86,640.80 : x
  2. Step 2: Convert to fraction form
    149,957.60/224,900.40 = 86,640.80/x
  3. Step 3: Cross multiply
    149,957.60x = 224,900.40 × 86,640.80
  4. Step 4: Simplify right side
    149,957.60x = 19,485,550,576.32
  5. Step 5: Solve for x
    x = 19,485,550,576.32/149,957.60
  6. Step 6: Final answer
    x = 129,940.40

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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.