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Finding the Fourth Proportional to 172,852.65, 258,876.14 and 166,866.21

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Solution

The fourth proportional to 172,852.65, 258,876.14 and 166,866.21 is: 249,910.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,852.65 : 258,876.14 = 166,866.21 : x
  2. Step 2: Convert to fraction form
    172,852.65/258,876.14 = 166,866.21/x
  3. Step 3: Cross multiply
    172,852.65x = 258,876.14 × 166,866.21
  4. Step 4: Simplify right side
    172,852.65x = 43,197,679,506.90
  5. Step 5: Solve for x
    x = 43,197,679,506.90/172,852.65
  6. Step 6: Final answer
    x = 249,910.43

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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.