Home / 231,638.70-347,458.05-81,877.80

Finding the Fourth Proportional to 231,638.70, 347,458.05 and 81,877.80

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Solution

The fourth proportional to 231,638.70, 347,458.05 and 81,877.80 is: 122,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,638.70 : 347,458.05 = 81,877.80 : x
  2. Step 2: Convert to fraction form
    231,638.70/347,458.05 = 81,877.80/x
  3. Step 3: Cross multiply
    231,638.70x = 347,458.05 × 81,877.80
  4. Step 4: Simplify right side
    231,638.70x = 28,449,100,726.29
  5. Step 5: Solve for x
    x = 28,449,100,726.29/231,638.70
  6. Step 6: Final answer
    x = 122,816.70

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1.5x scale

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.