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Finding the Fourth Proportional to 169,434.65, 253,986.74 and 80,664.32

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Solution

The fourth proportional to 169,434.65, 253,986.74 and 80,664.32 is: 120,917.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,434.65 : 253,986.74 = 80,664.32 : x
  2. Step 2: Convert to fraction form
    169,434.65/253,986.74 = 80,664.32/x
  3. Step 3: Cross multiply
    169,434.65x = 253,986.74 × 80,664.32
  4. Step 4: Simplify right side
    169,434.65x = 20,487,668,205.25
  5. Step 5: Solve for x
    x = 20,487,668,205.25/169,434.65
  6. Step 6: Final answer
    x = 120,917.82

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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.