Home / 91,202.16-136,143.33-78,801.96

Finding the Fourth Proportional to 91,202.16, 136,143.33 and 78,801.96

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Solution

The fourth proportional to 91,202.16, 136,143.33 and 78,801.96 is: 117,632.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,202.16 : 136,143.33 = 78,801.96 : x
  2. Step 2: Convert to fraction form
    91,202.16/136,143.33 = 78,801.96/x
  3. Step 3: Cross multiply
    91,202.16x = 136,143.33 × 78,801.96
  4. Step 4: Simplify right side
    91,202.16x = 10,728,361,244.93
  5. Step 5: Solve for x
    x = 10,728,361,244.93/91,202.16
  6. Step 6: Final answer
    x = 117,632.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.