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Finding the Fourth Proportional to 149,930.40, 224,751.60 and 86,685.60

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Solution

The fourth proportional to 149,930.40, 224,751.60 and 86,685.60 is: 129,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,930.40 : 224,751.60 = 86,685.60 : x
  2. Step 2: Convert to fraction form
    149,930.40/224,751.60 = 86,685.60/x
  3. Step 3: Cross multiply
    149,930.40x = 224,751.60 × 86,685.60
  4. Step 4: Simplify right side
    149,930.40x = 19,482,727,296.96
  5. Step 5: Solve for x
    x = 19,482,727,296.96/149,930.40
  6. Step 6: Final answer
    x = 129,945.14

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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.