Home / 143,434.48-197,938.49-78,902.33

Finding the Fourth Proportional to 143,434.48, 197,938.49 and 78,902.33

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Solution

The fourth proportional to 143,434.48, 197,938.49 and 78,902.33 is: 108,884.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,434.48 : 197,938.49 = 78,902.33 : x
  2. Step 2: Convert to fraction form
    143,434.48/197,938.49 = 78,902.33/x
  3. Step 3: Cross multiply
    143,434.48x = 197,938.49 × 78,902.33
  4. Step 4: Simplify right side
    143,434.48x = 15,617,807,019.53
  5. Step 5: Solve for x
    x = 15,617,807,019.53/143,434.48
  6. Step 6: Final answer
    x = 108,884.61

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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.