Home / 142,797.60-213,991.20-80,336.16

Finding the Fourth Proportional to 142,797.60, 213,991.20 and 80,336.16

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Solution

The fourth proportional to 142,797.60, 213,991.20 and 80,336.16 is: 120,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,797.60 : 213,991.20 = 80,336.16 : x
  2. Step 2: Convert to fraction form
    142,797.60/213,991.20 = 80,336.16/x
  3. Step 3: Cross multiply
    142,797.60x = 213,991.20 × 80,336.16
  4. Step 4: Simplify right side
    142,797.60x = 17,191,231,281.79
  5. Step 5: Solve for x
    x = 17,191,231,281.79/142,797.60
  6. Step 6: Final answer
    x = 120,388.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.