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Finding the Fourth Proportional to 115,291.92, 171,791.75 and 102,715.30

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Solution

The fourth proportional to 115,291.92, 171,791.75 and 102,715.30 is: 153,051.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,291.92 : 171,791.75 = 102,715.30 : x
  2. Step 2: Convert to fraction form
    115,291.92/171,791.75 = 102,715.30/x
  3. Step 3: Cross multiply
    115,291.92x = 171,791.75 × 102,715.30
  4. Step 4: Simplify right side
    115,291.92x = 17,645,641,138.78
  5. Step 5: Solve for x
    x = 17,645,641,138.78/115,291.92
  6. Step 6: Final answer
    x = 153,051.85

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1.5x scale

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.