Home / 85,065.48-117,134.10-80,078.04

Finding the Fourth Proportional to 85,065.48, 117,134.10 and 80,078.04

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Solution

The fourth proportional to 85,065.48, 117,134.10 and 80,078.04 is: 110,266.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,065.48 : 117,134.10 = 80,078.04 : x
  2. Step 2: Convert to fraction form
    85,065.48/117,134.10 = 80,078.04/x
  3. Step 3: Cross multiply
    85,065.48x = 117,134.10 × 80,078.04
  4. Step 4: Simplify right side
    85,065.48x = 9,379,869,145.16
  5. Step 5: Solve for x
    x = 9,379,869,145.16/85,065.48
  6. Step 6: Final answer
    x = 110,266.46

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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.