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Finding the Fourth Proportional to 159,679.76, 220,355.16 and 88,066.40

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Solution

The fourth proportional to 159,679.76, 220,355.16 and 88,066.40 is: 121,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,679.76 : 220,355.16 = 88,066.40 : x
  2. Step 2: Convert to fraction form
    159,679.76/220,355.16 = 88,066.40/x
  3. Step 3: Cross multiply
    159,679.76x = 220,355.16 × 88,066.40
  4. Step 4: Simplify right side
    159,679.76x = 19,405,885,662.62
  5. Step 5: Solve for x
    x = 19,405,885,662.62/159,679.76
  6. Step 6: Final answer
    x = 121,530.03

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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.