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Finding the Fourth Proportional to 172,854.15, 258,878.39 and 166,867.71

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Solution

The fourth proportional to 172,854.15, 258,878.39 and 166,867.71 is: 249,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,854.15 : 258,878.39 = 166,867.71 : x
  2. Step 2: Convert to fraction form
    172,854.15/258,878.39 = 166,867.71/x
  3. Step 3: Cross multiply
    172,854.15x = 258,878.39 × 166,867.71
  4. Step 4: Simplify right side
    172,854.15x = 43,198,443,273.45
  5. Step 5: Solve for x
    x = 43,198,443,273.45/172,854.15
  6. Step 6: Final answer
    x = 249,912.68

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1.5x scale

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.