Home / 142,649.81-196,856.43-82,220.04

Finding the Fourth Proportional to 142,649.81, 196,856.43 and 82,220.04

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Solution

The fourth proportional to 142,649.81, 196,856.43 and 82,220.04 is: 113,463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,649.81 : 196,856.43 = 82,220.04 : x
  2. Step 2: Convert to fraction form
    142,649.81/196,856.43 = 82,220.04/x
  3. Step 3: Cross multiply
    142,649.81x = 196,856.43 × 82,220.04
  4. Step 4: Simplify right side
    142,649.81x = 16,185,542,686.87
  5. Step 5: Solve for x
    x = 16,185,542,686.87/142,649.81
  6. Step 6: Final answer
    x = 113,463.47

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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.