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Finding the Fourth Proportional to 121,346.80, 182,020.20 and 119,791.60

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Solution

The fourth proportional to 121,346.80, 182,020.20 and 119,791.60 is: 179,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,346.80 : 182,020.20 = 119,791.60 : x
  2. Step 2: Convert to fraction form
    121,346.80/182,020.20 = 119,791.60/x
  3. Step 3: Cross multiply
    121,346.80x = 182,020.20 × 119,791.60
  4. Step 4: Simplify right side
    121,346.80x = 21,804,490,990.32
  5. Step 5: Solve for x
    x = 21,804,490,990.32/121,346.80
  6. Step 6: Final answer
    x = 179,687.40

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1.5x scale

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.