Home / 230,515.50-318,117.02-128,539.96

Finding the Fourth Proportional to 230,515.50, 318,117.02 and 128,539.96

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Solution

The fourth proportional to 230,515.50, 318,117.02 and 128,539.96 is: 177,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,515.50 : 318,117.02 = 128,539.96 : x
  2. Step 2: Convert to fraction form
    230,515.50/318,117.02 = 128,539.96/x
  3. Step 3: Cross multiply
    230,515.50x = 318,117.02 × 128,539.96
  4. Step 4: Simplify right side
    230,515.50x = 40,890,750,100.57
  5. Step 5: Solve for x
    x = 40,890,750,100.57/230,515.50
  6. Step 6: Final answer
    x = 177,388.29

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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.