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Finding the Fourth Proportional to 187,729.50, 259,066.71 and 112,278

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Solution

The fourth proportional to 187,729.50, 259,066.71 and 112,278 is: 154,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,729.50 : 259,066.71 = 112,278 : x
  2. Step 2: Convert to fraction form
    187,729.50/259,066.71 = 112,278/x
  3. Step 3: Cross multiply
    187,729.50x = 259,066.71 × 112,278
  4. Step 4: Simplify right side
    187,729.50x = 29,087,492,065.38
  5. Step 5: Solve for x
    x = 29,087,492,065.38/187,729.50
  6. Step 6: Final answer
    x = 154,943.64

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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.