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Finding the Fourth Proportional to 187,539, 258,793.88 and 102,639.64

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Solution

The fourth proportional to 187,539, 258,793.88 and 102,639.64 is: 141,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,539 : 258,793.88 = 102,639.64 : x
  2. Step 2: Convert to fraction form
    187,539/258,793.88 = 102,639.64/x
  3. Step 3: Cross multiply
    187,539x = 258,793.88 × 102,639.64
  4. Step 4: Simplify right side
    187,539x = 26,562,510,677.40
  5. Step 5: Solve for x
    x = 26,562,510,677.40/187,539
  6. Step 6: Final answer
    x = 141,637.26

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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.