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Finding the Fourth Proportional to 159,476, 220,086.96 and 87,856.16

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Solution

The fourth proportional to 159,476, 220,086.96 and 87,856.16 is: 121,247.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,476 : 220,086.96 = 87,856.16 : x
  2. Step 2: Convert to fraction form
    159,476/220,086.96 = 87,856.16/x
  3. Step 3: Cross multiply
    159,476x = 220,086.96 × 87,856.16
  4. Step 4: Simplify right side
    159,476x = 19,335,995,171.67
  5. Step 5: Solve for x
    x = 19,335,995,171.67/159,476
  6. Step 6: Final answer
    x = 121,247.05

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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.