Home / 143,057.18-197,415.15-79,393.34

Finding the Fourth Proportional to 143,057.18, 197,415.15 and 79,393.34

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Solution

The fourth proportional to 143,057.18, 197,415.15 and 79,393.34 is: 109,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057.18 : 197,415.15 = 79,393.34 : x
  2. Step 2: Convert to fraction form
    143,057.18/197,415.15 = 79,393.34/x
  3. Step 3: Cross multiply
    143,057.18x = 197,415.15 × 79,393.34
  4. Step 4: Simplify right side
    143,057.18x = 15,673,448,125.10
  5. Step 5: Solve for x
    x = 15,673,448,125.10/143,057.18
  6. Step 6: Final answer
    x = 109,560.72

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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.