Home / 143,648.07-198,230.27-78,235.41

Finding the Fourth Proportional to 143,648.07, 198,230.27 and 78,235.41

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Solution

The fourth proportional to 143,648.07, 198,230.27 and 78,235.41 is: 107,962.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,648.07 : 198,230.27 = 78,235.41 : x
  2. Step 2: Convert to fraction form
    143,648.07/198,230.27 = 78,235.41/x
  3. Step 3: Cross multiply
    143,648.07x = 198,230.27 × 78,235.41
  4. Step 4: Simplify right side
    143,648.07x = 15,508,627,183.25
  5. Step 5: Solve for x
    x = 15,508,627,183.25/143,648.07
  6. Step 6: Final answer
    x = 107,962.66

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1.5x scale

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.