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Finding the Fourth Proportional to 192,000.80, 288,001.20 and 121,930.40

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Solution

The fourth proportional to 192,000.80, 288,001.20 and 121,930.40 is: 182,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,000.80 : 288,001.20 = 121,930.40 : x
  2. Step 2: Convert to fraction form
    192,000.80/288,001.20 = 121,930.40/x
  3. Step 3: Cross multiply
    192,000.80x = 288,001.20 × 121,930.40
  4. Step 4: Simplify right side
    192,000.80x = 35,116,101,516.48
  5. Step 5: Solve for x
    x = 35,116,101,516.48/192,000.80
  6. Step 6: Final answer
    x = 182,895.60

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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.