Home / 144,142.58-198,864.05-83,691.70

Finding the Fourth Proportional to 144,142.58, 198,864.05 and 83,691.70

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Solution

The fourth proportional to 144,142.58, 198,864.05 and 83,691.70 is: 115,463.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,142.58 : 198,864.05 = 83,691.70 : x
  2. Step 2: Convert to fraction form
    144,142.58/198,864.05 = 83,691.70/x
  3. Step 3: Cross multiply
    144,142.58x = 198,864.05 × 83,691.70
  4. Step 4: Simplify right side
    144,142.58x = 16,643,270,413.39
  5. Step 5: Solve for x
    x = 16,643,270,413.39/144,142.58
  6. Step 6: Final answer
    x = 115,463.94

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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.