Home / 142,479.25-196,604.36-78,808.39

Finding the Fourth Proportional to 142,479.25, 196,604.36 and 78,808.39

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Solution

The fourth proportional to 142,479.25, 196,604.36 and 78,808.39 is: 108,746.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,479.25 : 196,604.36 = 78,808.39 : x
  2. Step 2: Convert to fraction form
    142,479.25/196,604.36 = 78,808.39/x
  3. Step 3: Cross multiply
    142,479.25x = 196,604.36 × 78,808.39
  4. Step 4: Simplify right side
    142,479.25x = 15,494,072,684.54
  5. Step 5: Solve for x
    x = 15,494,072,684.54/142,479.25
  6. Step 6: Final answer
    x = 108,746.17

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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.