Home / 143,207.41-197,629.71-78,680.83

Finding the Fourth Proportional to 143,207.41, 197,629.71 and 78,680.83

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Solution

The fourth proportional to 143,207.41, 197,629.71 and 78,680.83 is: 108,581.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,207.41 : 197,629.71 = 78,680.83 : x
  2. Step 2: Convert to fraction form
    143,207.41/197,629.71 = 78,680.83/x
  3. Step 3: Cross multiply
    143,207.41x = 197,629.71 × 78,680.83
  4. Step 4: Simplify right side
    143,207.41x = 15,549,669,615.46
  5. Step 5: Solve for x
    x = 15,549,669,615.46/143,207.41
  6. Step 6: Final answer
    x = 108,581.46

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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.