Home / 155,540.10-233,137.35-85,469.70

Finding the Fourth Proportional to 155,540.10, 233,137.35 and 85,469.70

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Solution

The fourth proportional to 155,540.10, 233,137.35 and 85,469.70 is: 128,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,540.10 : 233,137.35 = 85,469.70 : x
  2. Step 2: Convert to fraction form
    155,540.10/233,137.35 = 85,469.70/x
  3. Step 3: Cross multiply
    155,540.10x = 233,137.35 × 85,469.70
  4. Step 4: Simplify right side
    155,540.10x = 19,926,179,363.30
  5. Step 5: Solve for x
    x = 19,926,179,363.30/155,540.10
  6. Step 6: Final answer
    x = 128,109.60

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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.