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Finding the Fourth Proportional to 172,790.88, 259,328.88 and 133,586.88

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Solution

The fourth proportional to 172,790.88, 259,328.88 and 133,586.88 is: 200,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,790.88 : 259,328.88 = 133,586.88 : x
  2. Step 2: Convert to fraction form
    172,790.88/259,328.88 = 133,586.88/x
  3. Step 3: Cross multiply
    172,790.88x = 259,328.88 × 133,586.88
  4. Step 4: Simplify right side
    172,790.88x = 34,642,935,973.09
  5. Step 5: Solve for x
    x = 34,642,935,973.09/172,790.88
  6. Step 6: Final answer
    x = 200,490.53

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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.