Home / 143,837.32-198,471.78-83,383.20

Finding the Fourth Proportional to 143,837.32, 198,471.78 and 83,383.20

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Solution

The fourth proportional to 143,837.32, 198,471.78 and 83,383.20 is: 115,055.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,837.32 : 198,471.78 = 83,383.20 : x
  2. Step 2: Convert to fraction form
    143,837.32/198,471.78 = 83,383.20/x
  3. Step 3: Cross multiply
    143,837.32x = 198,471.78 × 83,383.20
  4. Step 4: Simplify right side
    143,837.32x = 16,549,212,126.10
  5. Step 5: Solve for x
    x = 16,549,212,126.10/143,837.32
  6. Step 6: Final answer
    x = 115,055.06

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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.