Home / 201,569.11-278,072.31-129,972.13

Finding the Fourth Proportional to 201,569.11, 278,072.31 and 129,972.13

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Solution

The fourth proportional to 201,569.11, 278,072.31 and 129,972.13 is: 179,301.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,569.11 : 278,072.31 = 129,972.13 : x
  2. Step 2: Convert to fraction form
    201,569.11/278,072.31 = 129,972.13/x
  3. Step 3: Cross multiply
    201,569.11x = 278,072.31 × 129,972.13
  4. Step 4: Simplify right side
    201,569.11x = 36,141,650,424.72
  5. Step 5: Solve for x
    x = 36,141,650,424.72/201,569.11
  6. Step 6: Final answer
    x = 179,301.53

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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.