Home / 111,815.07-167,722.62-76,648.11

Finding the Fourth Proportional to 111,815.07, 167,722.62 and 76,648.11

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Solution

The fourth proportional to 111,815.07, 167,722.62 and 76,648.11 is: 114,972.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,815.07 : 167,722.62 = 76,648.11 : x
  2. Step 2: Convert to fraction form
    111,815.07/167,722.62 = 76,648.11/x
  3. Step 3: Cross multiply
    111,815.07x = 167,722.62 × 76,648.11
  4. Step 4: Simplify right side
    111,815.07x = 12,855,621,827.25
  5. Step 5: Solve for x
    x = 12,855,621,827.25/111,815.07
  6. Step 6: Final answer
    x = 114,972.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.