Home / 142,719.97-213,738.91-79,382.77

Finding the Fourth Proportional to 142,719.97, 213,738.91 and 79,382.77

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Solution

The fourth proportional to 142,719.97, 213,738.91 and 79,382.77 is: 118,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,719.97 : 213,738.91 = 79,382.77 : x
  2. Step 2: Convert to fraction form
    142,719.97/213,738.91 = 79,382.77/x
  3. Step 3: Cross multiply
    142,719.97x = 213,738.91 × 79,382.77
  4. Step 4: Simplify right side
    142,719.97x = 16,967,186,732.58
  5. Step 5: Solve for x
    x = 16,967,186,732.58/142,719.97
  6. Step 6: Final answer
    x = 118,884.46

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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.