Home / 142,566.89-196,764.39-81,313.20

Finding the Fourth Proportional to 142,566.89, 196,764.39 and 81,313.20

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Solution

The fourth proportional to 142,566.89, 196,764.39 and 81,313.20 is: 112,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,566.89 : 196,764.39 = 81,313.20 : x
  2. Step 2: Convert to fraction form
    142,566.89/196,764.39 = 81,313.20/x
  3. Step 3: Cross multiply
    142,566.89x = 196,764.39 × 81,313.20
  4. Step 4: Simplify right side
    142,566.89x = 15,999,542,196.95
  5. Step 5: Solve for x
    x = 15,999,542,196.95/142,566.89
  6. Step 6: Final answer
    x = 112,224.81

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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.