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Finding the Fourth Proportional to 187,690.88, 259,017.17 and 102,807.94

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Solution

The fourth proportional to 187,690.88, 259,017.17 and 102,807.94 is: 141,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,690.88 : 259,017.17 = 102,807.94 : x
  2. Step 2: Convert to fraction form
    187,690.88/259,017.17 = 102,807.94/x
  3. Step 3: Cross multiply
    187,690.88x = 259,017.17 × 102,807.94
  4. Step 4: Simplify right side
    187,690.88x = 26,629,021,672.33
  5. Step 5: Solve for x
    x = 26,629,021,672.33/187,690.88
  6. Step 6: Final answer
    x = 141,877.01

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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.