Home / 142,656.17-196,865.38-78,993.97

Finding the Fourth Proportional to 142,656.17, 196,865.38 and 78,993.97

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Solution

The fourth proportional to 142,656.17, 196,865.38 and 78,993.97 is: 109,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,656.17 : 196,865.38 = 78,993.97 : x
  2. Step 2: Convert to fraction form
    142,656.17/196,865.38 = 78,993.97/x
  3. Step 3: Cross multiply
    142,656.17x = 196,865.38 × 78,993.97
  4. Step 4: Simplify right side
    142,656.17x = 15,551,177,232.11
  5. Step 5: Solve for x
    x = 15,551,177,232.11/142,656.17
  6. Step 6: Final answer
    x = 109,011.60

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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.