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Finding the Fourth Proportional to 187,689.79, 259,012.02 and 102,808.27

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Solution

The fourth proportional to 187,689.79, 259,012.02 and 102,808.27 is: 141,875.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,689.79 : 259,012.02 = 102,808.27 : x
  2. Step 2: Convert to fraction form
    187,689.79/259,012.02 = 102,808.27/x
  3. Step 3: Cross multiply
    187,689.79x = 259,012.02 × 102,808.27
  4. Step 4: Simplify right side
    187,689.79x = 26,628,577,685.41
  5. Step 5: Solve for x
    x = 26,628,577,685.41/187,689.79
  6. Step 6: Final answer
    x = 141,875.47

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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.