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Finding the Fourth Proportional to 115,851.89, 159,878.04 and 65,550.89

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Solution

The fourth proportional to 115,851.89, 159,878.04 and 65,550.89 is: 90,461.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,851.89 : 159,878.04 = 65,550.89 : x
  2. Step 2: Convert to fraction form
    115,851.89/159,878.04 = 65,550.89/x
  3. Step 3: Cross multiply
    115,851.89x = 159,878.04 × 65,550.89
  4. Step 4: Simplify right side
    115,851.89x = 10,480,148,213.15
  5. Step 5: Solve for x
    x = 10,480,148,213.15/115,851.89
  6. Step 6: Final answer
    x = 90,461.61

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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.