Home / 143,870.12-198,695.67-109,512.08

Finding the Fourth Proportional to 143,870.12, 198,695.67 and 109,512.08

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Solution

The fourth proportional to 143,870.12, 198,695.67 and 109,512.08 is: 151,244.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,870.12 : 198,695.67 = 109,512.08 : x
  2. Step 2: Convert to fraction form
    143,870.12/198,695.67 = 109,512.08/x
  3. Step 3: Cross multiply
    143,870.12x = 198,695.67 × 109,512.08
  4. Step 4: Simplify right side
    143,870.12x = 21,759,576,108.69
  5. Step 5: Solve for x
    x = 21,759,576,108.69/143,870.12
  6. Step 6: Final answer
    x = 151,244.58

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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.