Home / 118,514.12-177,576.78-71,780.36

Finding the Fourth Proportional to 118,514.12, 177,576.78 and 71,780.36

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Solution

The fourth proportional to 118,514.12, 177,576.78 and 71,780.36 is: 107,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,514.12 : 177,576.78 = 71,780.36 : x
  2. Step 2: Convert to fraction form
    118,514.12/177,576.78 = 71,780.36/x
  3. Step 3: Cross multiply
    118,514.12x = 177,576.78 × 71,780.36
  4. Step 4: Simplify right side
    118,514.12x = 12,746,525,196.04
  5. Step 5: Solve for x
    x = 12,746,525,196.04/118,514.12
  6. Step 6: Final answer
    x = 107,552.80

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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.