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Finding the Fourth Proportional to 159,523.78, 220,152.62 and 87,903.78

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Solution

The fourth proportional to 159,523.78, 220,152.62 and 87,903.78 is: 121,312.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,523.78 : 220,152.62 = 87,903.78 : x
  2. Step 2: Convert to fraction form
    159,523.78/220,152.62 = 87,903.78/x
  3. Step 3: Cross multiply
    159,523.78x = 220,152.62 × 87,903.78
  4. Step 4: Simplify right side
    159,523.78x = 19,352,247,474.90
  5. Step 5: Solve for x
    x = 19,352,247,474.90/159,523.78
  6. Step 6: Final answer
    x = 121,312.62

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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.