Home / 143,631.38-198,212.66-79,970.54

Finding the Fourth Proportional to 143,631.38, 198,212.66 and 79,970.54

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Solution

The fourth proportional to 143,631.38, 198,212.66 and 79,970.54 is: 110,360.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,631.38 : 198,212.66 = 79,970.54 : x
  2. Step 2: Convert to fraction form
    143,631.38/198,212.66 = 79,970.54/x
  3. Step 3: Cross multiply
    143,631.38x = 198,212.66 × 79,970.54
  4. Step 4: Simplify right side
    143,631.38x = 15,851,173,557.14
  5. Step 5: Solve for x
    x = 15,851,173,557.14/143,631.38
  6. Step 6: Final answer
    x = 110,360.10

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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.