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Finding the Fourth Proportional to 192,654.20, 288,981.30 and 99,342.20

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Solution

The fourth proportional to 192,654.20, 288,981.30 and 99,342.20 is: 149,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,654.20 : 288,981.30 = 99,342.20 : x
  2. Step 2: Convert to fraction form
    192,654.20/288,981.30 = 99,342.20/x
  3. Step 3: Cross multiply
    192,654.20x = 288,981.30 × 99,342.20
  4. Step 4: Simplify right side
    192,654.20x = 28,708,038,100.86
  5. Step 5: Solve for x
    x = 28,708,038,100.86/192,654.20
  6. Step 6: Final answer
    x = 149,013.30

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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.