Home / 156,720.14-234,874.86-72,469.60

Finding the Fourth Proportional to 156,720.14, 234,874.86 and 72,469.60

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Solution

The fourth proportional to 156,720.14, 234,874.86 and 72,469.60 is: 108,609.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,720.14 : 234,874.86 = 72,469.60 : x
  2. Step 2: Convert to fraction form
    156,720.14/234,874.86 = 72,469.60/x
  3. Step 3: Cross multiply
    156,720.14x = 234,874.86 × 72,469.60
  4. Step 4: Simplify right side
    156,720.14x = 17,021,287,154.26
  5. Step 5: Solve for x
    x = 17,021,287,154.26/156,720.14
  6. Step 6: Final answer
    x = 108,609.44

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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.