Home / 135,439.20-186,914.52-75,006.72

Finding the Fourth Proportional to 135,439.20, 186,914.52 and 75,006.72

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Solution

The fourth proportional to 135,439.20, 186,914.52 and 75,006.72 is: 103,513.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,439.20 : 186,914.52 = 75,006.72 : x
  2. Step 2: Convert to fraction form
    135,439.20/186,914.52 = 75,006.72/x
  3. Step 3: Cross multiply
    135,439.20x = 186,914.52 × 75,006.72
  4. Step 4: Simplify right side
    135,439.20x = 14,019,845,065.57
  5. Step 5: Solve for x
    x = 14,019,845,065.57/135,439.20
  6. Step 6: Final answer
    x = 103,513.94

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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.