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Finding the Fourth Proportional to 115,287.54, 171,785.28 and 102,710.94

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Solution

The fourth proportional to 115,287.54, 171,785.28 and 102,710.94 is: 153,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,287.54 : 171,785.28 = 102,710.94 : x
  2. Step 2: Convert to fraction form
    115,287.54/171,785.28 = 102,710.94/x
  3. Step 3: Cross multiply
    115,287.54x = 171,785.28 × 102,710.94
  4. Step 4: Simplify right side
    115,287.54x = 17,644,227,586.96
  5. Step 5: Solve for x
    x = 17,644,227,586.96/115,287.54
  6. Step 6: Final answer
    x = 153,045.40

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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.