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Finding the Fourth Proportional to 138,759.99, 191,488.46 and 75,097.83

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Solution

The fourth proportional to 138,759.99, 191,488.46 and 75,097.83 is: 103,634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,759.99 : 191,488.46 = 75,097.83 : x
  2. Step 2: Convert to fraction form
    138,759.99/191,488.46 = 75,097.83/x
  3. Step 3: Cross multiply
    138,759.99x = 191,488.46 × 75,097.83
  4. Step 4: Simplify right side
    138,759.99x = 14,380,368,158.63
  5. Step 5: Solve for x
    x = 14,380,368,158.63/138,759.99
  6. Step 6: Final answer
    x = 103,634.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.