Home / 142,144.78-213,227.43-40,938.70

Finding the Fourth Proportional to 142,144.78, 213,227.43 and 40,938.70

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Solution

The fourth proportional to 142,144.78, 213,227.43 and 40,938.70 is: 61,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,144.78 : 213,227.43 = 40,938.70 : x
  2. Step 2: Convert to fraction form
    142,144.78/213,227.43 = 40,938.70/x
  3. Step 3: Cross multiply
    142,144.78x = 213,227.43 × 40,938.70
  4. Step 4: Simplify right side
    142,144.78x = 8,729,253,788.54
  5. Step 5: Solve for x
    x = 8,729,253,788.54/142,144.78
  6. Step 6: Final answer
    x = 61,411.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.