Home / 156,879.20-235,448.40-72,768.80

Finding the Fourth Proportional to 156,879.20, 235,448.40 and 72,768.80

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Solution

The fourth proportional to 156,879.20, 235,448.40 and 72,768.80 is: 109,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,879.20 : 235,448.40 = 72,768.80 : x
  2. Step 2: Convert to fraction form
    156,879.20/235,448.40 = 72,768.80/x
  3. Step 3: Cross multiply
    156,879.20x = 235,448.40 × 72,768.80
  4. Step 4: Simplify right side
    156,879.20x = 17,133,297,529.92
  5. Step 5: Solve for x
    x = 17,133,297,529.92/156,879.20
  6. Step 6: Final answer
    x = 109,213.32

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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.