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Finding the Fourth Proportional to 172,854.65, 258,879.13 and 166,868.21

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Solution

The fourth proportional to 172,854.65, 258,879.13 and 166,868.21 is: 249,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,854.65 : 258,879.13 = 166,868.21 : x
  2. Step 2: Convert to fraction form
    172,854.65/258,879.13 = 166,868.21/x
  3. Step 3: Cross multiply
    172,854.65x = 258,879.13 × 166,868.21
  4. Step 4: Simplify right side
    172,854.65x = 43,198,697,029.46
  5. Step 5: Solve for x
    x = 43,198,697,029.46/172,854.65
  6. Step 6: Final answer
    x = 249,913.42

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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.