Home / 142,356.69-196,451.73-78,694.13

Finding the Fourth Proportional to 142,356.69, 196,451.73 and 78,694.13

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Solution

The fourth proportional to 142,356.69, 196,451.73 and 78,694.13 is: 108,597.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,356.69 : 196,451.73 = 78,694.13 : x
  2. Step 2: Convert to fraction form
    142,356.69/196,451.73 = 78,694.13/x
  3. Step 3: Cross multiply
    142,356.69x = 196,451.73 × 78,694.13
  4. Step 4: Simplify right side
    142,356.69x = 15,459,598,470.47
  5. Step 5: Solve for x
    x = 15,459,598,470.47/142,356.69
  6. Step 6: Final answer
    x = 108,597.63

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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.