Home / 155,919.60-233,480.88-85,721.76

Finding the Fourth Proportional to 155,919.60, 233,480.88 and 85,721.76

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Solution

The fourth proportional to 155,919.60, 233,480.88 and 85,721.76 is: 128,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,919.60 : 233,480.88 = 85,721.76 : x
  2. Step 2: Convert to fraction form
    155,919.60/233,480.88 = 85,721.76/x
  3. Step 3: Cross multiply
    155,919.60x = 233,480.88 × 85,721.76
  4. Step 4: Simplify right side
    155,919.60x = 20,014,391,959.95
  5. Step 5: Solve for x
    x = 20,014,391,959.95/155,919.60
  6. Step 6: Final answer
    x = 128,363.54

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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.