Home / 151,630.72-209,233.60-87,956.16

Finding the Fourth Proportional to 151,630.72, 209,233.60 and 87,956.16

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Solution

The fourth proportional to 151,630.72, 209,233.60 and 87,956.16 is: 121,369.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,630.72 : 209,233.60 = 87,956.16 : x
  2. Step 2: Convert to fraction form
    151,630.72/209,233.60 = 87,956.16/x
  3. Step 3: Cross multiply
    151,630.72x = 209,233.60 × 87,956.16
  4. Step 4: Simplify right side
    151,630.72x = 18,403,383,998.98
  5. Step 5: Solve for x
    x = 18,403,383,998.98/151,630.72
  6. Step 6: Final answer
    x = 121,369.76

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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.