Home / 143,370.72-197,856.56-78,842.60

Finding the Fourth Proportional to 143,370.72, 197,856.56 and 78,842.60

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Solution

The fourth proportional to 143,370.72, 197,856.56 and 78,842.60 is: 108,805.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,370.72 : 197,856.56 = 78,842.60 : x
  2. Step 2: Convert to fraction form
    143,370.72/197,856.56 = 78,842.60/x
  3. Step 3: Cross multiply
    143,370.72x = 197,856.56 × 78,842.60
  4. Step 4: Simplify right side
    143,370.72x = 15,599,525,567.24
  5. Step 5: Solve for x
    x = 15,599,525,567.24/143,370.72
  6. Step 6: Final answer
    x = 108,805.52

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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.