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Finding the Fourth Proportional to 135,441.40, 186,909.04 and 75,011.97

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Solution

The fourth proportional to 135,441.40, 186,909.04 and 75,011.97 is: 103,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,441.40 : 186,909.04 = 75,011.97 : x
  2. Step 2: Convert to fraction form
    135,441.40/186,909.04 = 75,011.97/x
  3. Step 3: Cross multiply
    135,441.40x = 186,909.04 × 75,011.97
  4. Step 4: Simplify right side
    135,441.40x = 14,020,415,673.94
  5. Step 5: Solve for x
    x = 14,020,415,673.94/135,441.40
  6. Step 6: Final answer
    x = 103,516.47

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