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Finding the Fourth Proportional to 187,991.66, 259,432.54 and 103,108.52

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Solution

The fourth proportional to 187,991.66, 259,432.54 and 103,108.52 is: 142,291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,991.66 : 259,432.54 = 103,108.52 : x
  2. Step 2: Convert to fraction form
    187,991.66/259,432.54 = 103,108.52/x
  3. Step 3: Cross multiply
    187,991.66x = 259,432.54 × 103,108.52
  4. Step 4: Simplify right side
    187,991.66x = 26,749,705,239.24
  5. Step 5: Solve for x
    x = 26,749,705,239.24/187,991.66
  6. Step 6: Final answer
    x = 142,291.98

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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.