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Finding the Fourth Proportional to 172,812.70, 259,061.10 and 146,329.21

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Solution

The fourth proportional to 172,812.70, 259,061.10 and 146,329.21 is: 219,360.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,812.70 : 259,061.10 = 146,329.21 : x
  2. Step 2: Convert to fraction form
    172,812.70/259,061.10 = 146,329.21/x
  3. Step 3: Cross multiply
    172,812.70x = 259,061.10 × 146,329.21
  4. Step 4: Simplify right side
    172,812.70x = 37,908,206,104.73
  5. Step 5: Solve for x
    x = 37,908,206,104.73/172,812.70
  6. Step 6: Final answer
    x = 219,360.07

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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.