Home / 143,003.23-197,344.48-79,340.87

Finding the Fourth Proportional to 143,003.23, 197,344.48 and 79,340.87

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Solution

The fourth proportional to 143,003.23, 197,344.48 and 79,340.87 is: 109,490.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,003.23 : 197,344.48 = 79,340.87 : x
  2. Step 2: Convert to fraction form
    143,003.23/197,344.48 = 79,340.87/x
  3. Step 3: Cross multiply
    143,003.23x = 197,344.48 × 79,340.87
  4. Step 4: Simplify right side
    143,003.23x = 15,657,482,682.05
  5. Step 5: Solve for x
    x = 15,657,482,682.05/143,003.23
  6. Step 6: Final answer
    x = 109,490.42

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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.