Home / 142,665.91-196,874.11-81,415.48

Finding the Fourth Proportional to 142,665.91, 196,874.11 and 81,415.48

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Solution

The fourth proportional to 142,665.91, 196,874.11 and 81,415.48 is: 112,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,665.91 : 196,874.11 = 81,415.48 : x
  2. Step 2: Convert to fraction form
    142,665.91/196,874.11 = 81,415.48/x
  3. Step 3: Cross multiply
    142,665.91x = 196,874.11 × 81,415.48
  4. Step 4: Simplify right side
    142,665.91x = 16,028,600,143.95
  5. Step 5: Solve for x
    x = 16,028,600,143.95/142,665.91
  6. Step 6: Final answer
    x = 112,350.60

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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.