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Finding the Fourth Proportional to 143,793.69, 198,305.80 and 90,083.40

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Solution

The fourth proportional to 143,793.69, 198,305.80 and 90,083.40 is: 124,233.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,793.69 : 198,305.80 = 90,083.40 : x
  2. Step 2: Convert to fraction form
    143,793.69/198,305.80 = 90,083.40/x
  3. Step 3: Cross multiply
    143,793.69x = 198,305.80 × 90,083.40
  4. Step 4: Simplify right side
    143,793.69x = 17,864,060,253.30
  5. Step 5: Solve for x
    x = 17,864,060,253.30/143,793.69
  6. Step 6: Final answer
    x = 124,233.97

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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.