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Finding the Fourth Proportional to 136,430.40, 204,645.60 and 124,620.60

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Solution

The fourth proportional to 136,430.40, 204,645.60 and 124,620.60 is: 186,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,430.40 : 204,645.60 = 124,620.60 : x
  2. Step 2: Convert to fraction form
    136,430.40/204,645.60 = 124,620.60/x
  3. Step 3: Cross multiply
    136,430.40x = 204,645.60 × 124,620.60
  4. Step 4: Simplify right side
    136,430.40x = 25,503,057,459.36
  5. Step 5: Solve for x
    x = 25,503,057,459.36/136,430.40
  6. Step 6: Final answer
    x = 186,930.90

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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.