Home / 143,368.09-197,852.94-78,839.97

Finding the Fourth Proportional to 143,368.09, 197,852.94 and 78,839.97

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Solution

The fourth proportional to 143,368.09, 197,852.94 and 78,839.97 is: 108,801.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,368.09 : 197,852.94 = 78,839.97 : x
  2. Step 2: Convert to fraction form
    143,368.09/197,852.94 = 78,839.97/x
  3. Step 3: Cross multiply
    143,368.09x = 197,852.94 × 78,839.97
  4. Step 4: Simplify right side
    143,368.09x = 15,598,719,854.01
  5. Step 5: Solve for x
    x = 15,598,719,854.01/143,368.09
  6. Step 6: Final answer
    x = 108,801.90

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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.