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Finding the Fourth Proportional to 139,059.25, 191,900.04 and 75,396.89

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Solution

The fourth proportional to 139,059.25, 191,900.04 and 75,396.89 is: 104,046.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,059.25 : 191,900.04 = 75,396.89 : x
  2. Step 2: Convert to fraction form
    139,059.25/191,900.04 = 75,396.89/x
  3. Step 3: Cross multiply
    139,059.25x = 191,900.04 × 75,396.89
  4. Step 4: Simplify right side
    139,059.25x = 14,468,666,403.89
  5. Step 5: Solve for x
    x = 14,468,666,403.89/139,059.25
  6. Step 6: Final answer
    x = 104,046.78

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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.