Home / 142,655.96-196,865.18-78,993.74

Finding the Fourth Proportional to 142,655.96, 196,865.18 and 78,993.74

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Solution

The fourth proportional to 142,655.96, 196,865.18 and 78,993.74 is: 109,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,655.96 : 196,865.18 = 78,993.74 : x
  2. Step 2: Convert to fraction form
    142,655.96/196,865.18 = 78,993.74/x
  3. Step 3: Cross multiply
    142,655.96x = 196,865.18 × 78,993.74
  4. Step 4: Simplify right side
    142,655.96x = 15,551,116,843.97
  5. Step 5: Solve for x
    x = 15,551,116,843.97/142,655.96
  6. Step 6: Final answer
    x = 109,011.34

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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.