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Finding the Fourth Proportional to 192,555.81, 288,902.15 and 85,930.07

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Solution

The fourth proportional to 192,555.81, 288,902.15 and 85,930.07 is: 128,925.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,555.81 : 288,902.15 = 85,930.07 : x
  2. Step 2: Convert to fraction form
    192,555.81/288,902.15 = 85,930.07/x
  3. Step 3: Cross multiply
    192,555.81x = 288,902.15 × 85,930.07
  4. Step 4: Simplify right side
    192,555.81x = 24,825,382,909.73
  5. Step 5: Solve for x
    x = 24,825,382,909.73/192,555.81
  6. Step 6: Final answer
    x = 128,925.65

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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.