Home / 115,982.55-160,132.68-89,076.78

Finding the Fourth Proportional to 115,982.55, 160,132.68 and 89,076.78

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Solution

The fourth proportional to 115,982.55, 160,132.68 and 89,076.78 is: 122,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,982.55 : 160,132.68 = 89,076.78 : x
  2. Step 2: Convert to fraction form
    115,982.55/160,132.68 = 89,076.78/x
  3. Step 3: Cross multiply
    115,982.55x = 160,132.68 × 89,076.78
  4. Step 4: Simplify right side
    115,982.55x = 14,264,103,507.17
  5. Step 5: Solve for x
    x = 14,264,103,507.17/115,982.55
  6. Step 6: Final answer
    x = 122,984.91

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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.