Home / 174,503.10-261,649.53-78,422.70

Finding the Fourth Proportional to 174,503.10, 261,649.53 and 78,422.70

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Solution

The fourth proportional to 174,503.10, 261,649.53 and 78,422.70 is: 117,586.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,503.10 : 261,649.53 = 78,422.70 : x
  2. Step 2: Convert to fraction form
    174,503.10/261,649.53 = 78,422.70/x
  3. Step 3: Cross multiply
    174,503.10x = 261,649.53 × 78,422.70
  4. Step 4: Simplify right side
    174,503.10x = 20,519,262,596.33
  5. Step 5: Solve for x
    x = 20,519,262,596.33/174,503.10
  6. Step 6: Final answer
    x = 117,586.81

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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.