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Finding the Fourth Proportional to 128,101.14, 192,151.71 and 61,499.70

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Solution

The fourth proportional to 128,101.14, 192,151.71 and 61,499.70 is: 92,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,101.14 : 192,151.71 = 61,499.70 : x
  2. Step 2: Convert to fraction form
    128,101.14/192,151.71 = 61,499.70/x
  3. Step 3: Cross multiply
    128,101.14x = 192,151.71 × 61,499.70
  4. Step 4: Simplify right side
    128,101.14x = 11,817,272,519.49
  5. Step 5: Solve for x
    x = 11,817,272,519.49/128,101.14
  6. Step 6: Final answer
    x = 92,249.55

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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.