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Finding the Fourth Proportional to 192,155.76, 288,109.62 and 79,913.52

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Solution

The fourth proportional to 192,155.76, 288,109.62 and 79,913.52 is: 119,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,155.76 : 288,109.62 = 79,913.52 : x
  2. Step 2: Convert to fraction form
    192,155.76/288,109.62 = 79,913.52/x
  3. Step 3: Cross multiply
    192,155.76x = 288,109.62 × 79,913.52
  4. Step 4: Simplify right side
    192,155.76x = 23,023,853,880.06
  5. Step 5: Solve for x
    x = 23,023,853,880.06/192,155.76
  6. Step 6: Final answer
    x = 119,818.70

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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.