Home / 143,343.09-197,813.21-79,680.69

Finding the Fourth Proportional to 143,343.09, 197,813.21 and 79,680.69

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Solution

The fourth proportional to 143,343.09, 197,813.21 and 79,680.69 is: 109,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,343.09 : 197,813.21 = 79,680.69 : x
  2. Step 2: Convert to fraction form
    143,343.09/197,813.21 = 79,680.69/x
  3. Step 3: Cross multiply
    143,343.09x = 197,813.21 × 79,680.69
  4. Step 4: Simplify right side
    143,343.09x = 15,761,892,665.51
  5. Step 5: Solve for x
    x = 15,761,892,665.51/143,343.09
  6. Step 6: Final answer
    x = 109,959.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.