Home / 142,424.87-196,547.58-78,763.73

Finding the Fourth Proportional to 142,424.87, 196,547.58 and 78,763.73

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Solution

The fourth proportional to 142,424.87, 196,547.58 and 78,763.73 is: 108,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,424.87 : 196,547.58 = 78,763.73 : x
  2. Step 2: Convert to fraction form
    142,424.87/196,547.58 = 78,763.73/x
  3. Step 3: Cross multiply
    142,424.87x = 196,547.58 × 78,763.73
  4. Step 4: Simplify right side
    142,424.87x = 15,480,819,540.54
  5. Step 5: Solve for x
    x = 15,480,819,540.54/142,424.87
  6. Step 6: Final answer
    x = 108,694.64

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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.