Home / 103,964.91-143,472.44-57,399.28

Finding the Fourth Proportional to 103,964.91, 143,472.44 and 57,399.28

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Solution

The fourth proportional to 103,964.91, 143,472.44 and 57,399.28 is: 79,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,964.91 : 143,472.44 = 57,399.28 : x
  2. Step 2: Convert to fraction form
    103,964.91/143,472.44 = 57,399.28/x
  3. Step 3: Cross multiply
    103,964.91x = 143,472.44 × 57,399.28
  4. Step 4: Simplify right side
    103,964.91x = 8,235,214,397.16
  5. Step 5: Solve for x
    x = 8,235,214,397.16/103,964.91
  6. Step 6: Final answer
    x = 79,211.48

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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.