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Finding the Fourth Proportional to 159,500.82, 220,111.56 and 87,880.62

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Solution

The fourth proportional to 159,500.82, 220,111.56 and 87,880.62 is: 121,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,500.82 : 220,111.56 = 87,880.62 : x
  2. Step 2: Convert to fraction form
    159,500.82/220,111.56 = 87,880.62/x
  3. Step 3: Cross multiply
    159,500.82x = 220,111.56 × 87,880.62
  4. Step 4: Simplify right side
    159,500.82x = 19,343,540,361.97
  5. Step 5: Solve for x
    x = 19,343,540,361.97/159,500.82
  6. Step 6: Final answer
    x = 121,275.49

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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.