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Finding the Fourth Proportional to 115,288.91, 171,787.27 and 102,712.29

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Solution

The fourth proportional to 115,288.91, 171,787.27 and 102,712.29 is: 153,047.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,288.91 : 171,787.27 = 102,712.29 : x
  2. Step 2: Convert to fraction form
    115,288.91/171,787.27 = 102,712.29/x
  3. Step 3: Cross multiply
    115,288.91x = 171,787.27 × 102,712.29
  4. Step 4: Simplify right side
    115,288.91x = 17,644,663,894.55
  5. Step 5: Solve for x
    x = 17,644,663,894.55/115,288.91
  6. Step 6: Final answer
    x = 153,047.37

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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.