Home / 118,438.35-177,780.55-68,615.76

Finding the Fourth Proportional to 118,438.35, 177,780.55 and 68,615.76

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Solution

The fourth proportional to 118,438.35, 177,780.55 and 68,615.76 is: 102,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,438.35 : 177,780.55 = 68,615.76 : x
  2. Step 2: Convert to fraction form
    118,438.35/177,780.55 = 68,615.76/x
  3. Step 3: Cross multiply
    118,438.35x = 177,780.55 × 68,615.76
  4. Step 4: Simplify right side
    118,438.35x = 12,198,546,982.26
  5. Step 5: Solve for x
    x = 12,198,546,982.26/118,438.35
  6. Step 6: Final answer
    x = 102,994.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.