Home / 135,373.50-186,815.67-78,822.78

Finding the Fourth Proportional to 135,373.50, 186,815.67 and 78,822.78

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Solution

The fourth proportional to 135,373.50, 186,815.67 and 78,822.78 is: 108,775.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,373.50 : 186,815.67 = 78,822.78 : x
  2. Step 2: Convert to fraction form
    135,373.50/186,815.67 = 78,822.78/x
  3. Step 3: Cross multiply
    135,373.50x = 186,815.67 × 78,822.78
  4. Step 4: Simplify right side
    135,373.50x = 14,725,330,456.96
  5. Step 5: Solve for x
    x = 14,725,330,456.96/135,373.50
  6. Step 6: Final answer
    x = 108,775.58

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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.