Home / 142,747.07-196,983.19-79,081.07

Finding the Fourth Proportional to 142,747.07, 196,983.19 and 79,081.07

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Solution

The fourth proportional to 142,747.07, 196,983.19 and 79,081.07 is: 109,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747.07 : 196,983.19 = 79,081.07 : x
  2. Step 2: Convert to fraction form
    142,747.07/196,983.19 = 79,081.07/x
  3. Step 3: Cross multiply
    142,747.07x = 196,983.19 × 79,081.07
  4. Step 4: Simplify right side
    142,747.07x = 15,577,641,437.21
  5. Step 5: Solve for x
    x = 15,577,641,437.21/142,747.07
  6. Step 6: Final answer
    x = 109,127.57

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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.