Home / 142,422.68-196,533.60-78,759.92

Finding the Fourth Proportional to 142,422.68, 196,533.60 and 78,759.92

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Solution

The fourth proportional to 142,422.68, 196,533.60 and 78,759.92 is: 108,683.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,422.68 : 196,533.60 = 78,759.92 : x
  2. Step 2: Convert to fraction form
    142,422.68/196,533.60 = 78,759.92/x
  3. Step 3: Cross multiply
    142,422.68x = 196,533.60 × 78,759.92
  4. Step 4: Simplify right side
    142,422.68x = 15,478,970,613.31
  5. Step 5: Solve for x
    x = 15,478,970,613.31/142,422.68
  6. Step 6: Final answer
    x = 108,683.33

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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.