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Finding the Fourth Proportional to 159,471.48, 220,069.62 and 87,849.84

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Solution

The fourth proportional to 159,471.48, 220,069.62 and 87,849.84 is: 121,232.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,471.48 : 220,069.62 = 87,849.84 : x
  2. Step 2: Convert to fraction form
    159,471.48/220,069.62 = 87,849.84/x
  3. Step 3: Cross multiply
    159,471.48x = 220,069.62 × 87,849.84
  4. Step 4: Simplify right side
    159,471.48x = 19,333,080,905.86
  5. Step 5: Solve for x
    x = 19,333,080,905.86/159,471.48
  6. Step 6: Final answer
    x = 121,232.22

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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.