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Finding the Fourth Proportional to 187,888.26, 259,285.80 and 103,005.92

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Solution

The fourth proportional to 187,888.26, 259,285.80 and 103,005.92 is: 142,148.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,888.26 : 259,285.80 = 103,005.92 : x
  2. Step 2: Convert to fraction form
    187,888.26/259,285.80 = 103,005.92/x
  3. Step 3: Cross multiply
    187,888.26x = 259,285.80 × 103,005.92
  4. Step 4: Simplify right side
    187,888.26x = 26,707,972,371.94
  5. Step 5: Solve for x
    x = 26,707,972,371.94/187,888.26
  6. Step 6: Final answer
    x = 142,148.17

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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.