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Finding the Fourth Proportional to 128,097.80, 192,155.89 and 36,909.47

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Solution

The fourth proportional to 128,097.80, 192,155.89 and 36,909.47 is: 55,366.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.80 : 192,155.89 = 36,909.47 : x
  2. Step 2: Convert to fraction form
    128,097.80/192,155.89 = 36,909.47/x
  3. Step 3: Cross multiply
    128,097.80x = 192,155.89 × 36,909.47
  4. Step 4: Simplify right side
    128,097.80x = 7,092,370,911.95
  5. Step 5: Solve for x
    x = 7,092,370,911.95/128,097.80
  6. Step 6: Final answer
    x = 55,366.84

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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.