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Finding the Fourth Proportional to 115,287.66, 171,785.41 and 102,711.04

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Solution

The fourth proportional to 115,287.66, 171,785.41 and 102,711.04 is: 153,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,287.66 : 171,785.41 = 102,711.04 : x
  2. Step 2: Convert to fraction form
    115,287.66/171,785.41 = 102,711.04/x
  3. Step 3: Cross multiply
    115,287.66x = 171,785.41 × 102,711.04
  4. Step 4: Simplify right side
    115,287.66x = 17,644,257,431.69
  5. Step 5: Solve for x
    x = 17,644,257,431.69/115,287.66
  6. Step 6: Final answer
    x = 153,045.50

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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.