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Finding the Fourth Proportional to 159,841.41, 220,579.67 and 87,243.57

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Solution

The fourth proportional to 159,841.41, 220,579.67 and 87,243.57 is: 120,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,841.41 : 220,579.67 = 87,243.57 : x
  2. Step 2: Convert to fraction form
    159,841.41/220,579.67 = 87,243.57/x
  3. Step 3: Cross multiply
    159,841.41x = 220,579.67 × 87,243.57
  4. Step 4: Simplify right side
    159,841.41x = 19,244,157,880.22
  5. Step 5: Solve for x
    x = 19,244,157,880.22/159,841.41
  6. Step 6: Final answer
    x = 120,395.32

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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.