Home / 143,120.16-197,506.26-79,458.12

Finding the Fourth Proportional to 143,120.16, 197,506.26 and 79,458.12

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Solution

The fourth proportional to 143,120.16, 197,506.26 and 79,458.12 is: 109,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,120.16 : 197,506.26 = 79,458.12 : x
  2. Step 2: Convert to fraction form
    143,120.16/197,506.26 = 79,458.12/x
  3. Step 3: Cross multiply
    143,120.16x = 197,506.26 × 79,458.12
  4. Step 4: Simplify right side
    143,120.16x = 15,693,476,107.83
  5. Step 5: Solve for x
    x = 15,693,476,107.83/143,120.16
  6. Step 6: Final answer
    x = 109,652.45

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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.