Home / 143,057.07-197,422.11-79,393.50

Finding the Fourth Proportional to 143,057.07, 197,422.11 and 79,393.50

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Solution

The fourth proportional to 143,057.07, 197,422.11 and 79,393.50 is: 109,564.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,057.07 : 197,422.11 = 79,393.50 : x
  2. Step 2: Convert to fraction form
    143,057.07/197,422.11 = 79,393.50/x
  3. Step 3: Cross multiply
    143,057.07x = 197,422.11 × 79,393.50
  4. Step 4: Simplify right side
    143,057.07x = 15,674,032,290.29
  5. Step 5: Solve for x
    x = 15,674,032,290.29/143,057.07
  6. Step 6: Final answer
    x = 109,564.89

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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.