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Finding the Fourth Proportional to 172,875.71, 259,165.65 and 66,336.12

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Solution

The fourth proportional to 172,875.71, 259,165.65 and 66,336.12 is: 99,447.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,875.71 : 259,165.65 = 66,336.12 : x
  2. Step 2: Convert to fraction form
    172,875.71/259,165.65 = 66,336.12/x
  3. Step 3: Cross multiply
    172,875.71x = 259,165.65 × 66,336.12
  4. Step 4: Simplify right side
    172,875.71x = 17,192,043,658.28
  5. Step 5: Solve for x
    x = 17,192,043,658.28/172,875.71
  6. Step 6: Final answer
    x = 99,447.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.