Home / 142,751.69-197,003.79-79,089.49

Finding the Fourth Proportional to 142,751.69, 197,003.79 and 79,089.49

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Solution

The fourth proportional to 142,751.69, 197,003.79 and 79,089.49 is: 109,147.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,751.69 : 197,003.79 = 79,089.49 : x
  2. Step 2: Convert to fraction form
    142,751.69/197,003.79 = 79,089.49/x
  3. Step 3: Cross multiply
    142,751.69x = 197,003.79 × 79,089.49
  4. Step 4: Simplify right side
    142,751.69x = 15,580,929,279.17
  5. Step 5: Solve for x
    x = 15,580,929,279.17/142,751.69
  6. Step 6: Final answer
    x = 109,147.07

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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.