Home / 143,840.41-198,455.72-83,398.92

Finding the Fourth Proportional to 143,840.41, 198,455.72 and 83,398.92

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Solution

The fourth proportional to 143,840.41, 198,455.72 and 83,398.92 is: 115,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,840.41 : 198,455.72 = 83,398.92 : x
  2. Step 2: Convert to fraction form
    143,840.41/198,455.72 = 83,398.92/x
  3. Step 3: Cross multiply
    143,840.41x = 198,455.72 × 83,398.92
  4. Step 4: Simplify right side
    143,840.41x = 16,550,992,112.78
  5. Step 5: Solve for x
    x = 16,550,992,112.78/143,840.41
  6. Step 6: Final answer
    x = 115,064.97

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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.