Home / 142,717.22-196,950-78,185.04

Finding the Fourth Proportional to 142,717.22, 196,950 and 78,185.04

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Solution

The fourth proportional to 142,717.22, 196,950 and 78,185.04 is: 107,895.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,717.22 : 196,950 = 78,185.04 : x
  2. Step 2: Convert to fraction form
    142,717.22/196,950 = 78,185.04/x
  3. Step 3: Cross multiply
    142,717.22x = 196,950 × 78,185.04
  4. Step 4: Simplify right side
    142,717.22x = 15,398,543,628.00
  5. Step 5: Solve for x
    x = 15,398,543,628.00/142,717.22
  6. Step 6: Final answer
    x = 107,895.48

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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.