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Finding the Fourth Proportional to 159,147.09, 219,622.91 and 87,531.93

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Solution

The fourth proportional to 159,147.09, 219,622.91 and 87,531.93 is: 120,794.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,147.09 : 219,622.91 = 87,531.93 : x
  2. Step 2: Convert to fraction form
    159,147.09/219,622.91 = 87,531.93/x
  3. Step 3: Cross multiply
    159,147.09x = 219,622.91 × 87,531.93
  4. Step 4: Simplify right side
    159,147.09x = 19,224,016,746.86
  5. Step 5: Solve for x
    x = 19,224,016,746.86/159,147.09
  6. Step 6: Final answer
    x = 120,794.02

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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.