Home / 143,406.13-197,897.97-79,742.56

Finding the Fourth Proportional to 143,406.13, 197,897.97 and 79,742.56

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Solution

The fourth proportional to 143,406.13, 197,897.97 and 79,742.56 is: 110,043.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,406.13 : 197,897.97 = 79,742.56 : x
  2. Step 2: Convert to fraction form
    143,406.13/197,897.97 = 79,742.56/x
  3. Step 3: Cross multiply
    143,406.13x = 197,897.97 × 79,742.56
  4. Step 4: Simplify right side
    143,406.13x = 15,780,890,746.60
  5. Step 5: Solve for x
    x = 15,780,890,746.60/143,406.13
  6. Step 6: Final answer
    x = 110,043.35

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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.