Home / 142,656.11-196,871.37-78,993.91

Finding the Fourth Proportional to 142,656.11, 196,871.37 and 78,993.91

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Solution

The fourth proportional to 142,656.11, 196,871.37 and 78,993.91 is: 109,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,656.11 : 196,871.37 = 78,993.91 : x
  2. Step 2: Convert to fraction form
    142,656.11/196,871.37 = 78,993.91/x
  3. Step 3: Cross multiply
    142,656.11x = 196,871.37 × 78,993.91
  4. Step 4: Simplify right side
    142,656.11x = 15,551,638,791.18
  5. Step 5: Solve for x
    x = 15,551,638,791.18/142,656.11
  6. Step 6: Final answer
    x = 109,014.88

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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.