Home / 142,618.92-196,816.90-78,954.92

Finding the Fourth Proportional to 142,618.92, 196,816.90 and 78,954.92

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Solution

The fourth proportional to 142,618.92, 196,816.90 and 78,954.92 is: 108,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,618.92 : 196,816.90 = 78,954.92 : x
  2. Step 2: Convert to fraction form
    142,618.92/196,816.90 = 78,954.92/x
  3. Step 3: Cross multiply
    142,618.92x = 196,816.90 × 78,954.92
  4. Step 4: Simplify right side
    142,618.92x = 15,539,662,594.15
  5. Step 5: Solve for x
    x = 15,539,662,594.15/142,618.92
  6. Step 6: Final answer
    x = 108,959.33

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1.5x scale

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.