Home / 165,318.78-228,142.19-89,868.90

Finding the Fourth Proportional to 165,318.78, 228,142.19 and 89,868.90

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Solution

The fourth proportional to 165,318.78, 228,142.19 and 89,868.90 is: 124,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,318.78 : 228,142.19 = 89,868.90 : x
  2. Step 2: Convert to fraction form
    165,318.78/228,142.19 = 89,868.90/x
  3. Step 3: Cross multiply
    165,318.78x = 228,142.19 × 89,868.90
  4. Step 4: Simplify right side
    165,318.78x = 20,502,887,658.89
  5. Step 5: Solve for x
    x = 20,502,887,658.89/165,318.78
  6. Step 6: Final answer
    x = 124,020.32

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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.