Home / 143,543.12-198,076.68-83,117.84

Finding the Fourth Proportional to 143,543.12, 198,076.68 and 83,117.84

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Solution

The fourth proportional to 143,543.12, 198,076.68 and 83,117.84 is: 114,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,543.12 : 198,076.68 = 83,117.84 : x
  2. Step 2: Convert to fraction form
    143,543.12/198,076.68 = 83,117.84/x
  3. Step 3: Cross multiply
    143,543.12x = 198,076.68 × 83,117.84
  4. Step 4: Simplify right side
    143,543.12x = 16,463,705,795.97
  5. Step 5: Solve for x
    x = 16,463,705,795.97/143,543.12
  6. Step 6: Final answer
    x = 114,695.19

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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.