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Finding the Fourth Proportional to 172,633.28, 258,752.28 and 72,643.64

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Solution

The fourth proportional to 172,633.28, 258,752.28 and 72,643.64 is: 108,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,633.28 : 258,752.28 = 72,643.64 : x
  2. Step 2: Convert to fraction form
    172,633.28/258,752.28 = 72,643.64/x
  3. Step 3: Cross multiply
    172,633.28x = 258,752.28 × 72,643.64
  4. Step 4: Simplify right side
    172,633.28x = 18,796,707,477.50
  5. Step 5: Solve for x
    x = 18,796,707,477.50/172,633.28
  6. Step 6: Final answer
    x = 108,882.29

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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.