Home / 156,661.20-235,121.40-72,550.80

Finding the Fourth Proportional to 156,661.20, 235,121.40 and 72,550.80

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Solution

The fourth proportional to 156,661.20, 235,121.40 and 72,550.80 is: 108,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,661.20 : 235,121.40 = 72,550.80 : x
  2. Step 2: Convert to fraction form
    156,661.20/235,121.40 = 72,550.80/x
  3. Step 3: Cross multiply
    156,661.20x = 235,121.40 × 72,550.80
  4. Step 4: Simplify right side
    156,661.20x = 17,058,245,667.12
  5. Step 5: Solve for x
    x = 17,058,245,667.12/156,661.20
  6. Step 6: Final answer
    x = 108,886.22

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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.