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Finding the Fourth Proportional to 159,940.88, 220,720.20 and 88,320.80

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Solution

The fourth proportional to 159,940.88, 220,720.20 and 88,320.80 is: 121,883.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,940.88 : 220,720.20 = 88,320.80 : x
  2. Step 2: Convert to fraction form
    159,940.88/220,720.20 = 88,320.80/x
  3. Step 3: Cross multiply
    159,940.88x = 220,720.20 × 88,320.80
  4. Step 4: Simplify right side
    159,940.88x = 19,494,184,640.16
  5. Step 5: Solve for x
    x = 19,494,184,640.16/159,940.88
  6. Step 6: Final answer
    x = 121,883.69

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1.5x scale

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.