Home / 143,870.01-198,536.26-79,339.21

Finding the Fourth Proportional to 143,870.01, 198,536.26 and 79,339.21

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Solution

The fourth proportional to 143,870.01, 198,536.26 and 79,339.21 is: 109,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,870.01 : 198,536.26 = 79,339.21 : x
  2. Step 2: Convert to fraction form
    143,870.01/198,536.26 = 79,339.21/x
  3. Step 3: Cross multiply
    143,870.01x = 198,536.26 × 79,339.21
  4. Step 4: Simplify right side
    143,870.01x = 15,751,710,322.28
  5. Step 5: Solve for x
    x = 15,751,710,322.28/143,870.01
  6. Step 6: Final answer
    x = 109,485.71

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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.