Home / 156,768.26-216,341.76-85,149.68

Finding the Fourth Proportional to 156,768.26, 216,341.76 and 85,149.68

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Solution

The fourth proportional to 156,768.26, 216,341.76 and 85,149.68 is: 117,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,768.26 : 216,341.76 = 85,149.68 : x
  2. Step 2: Convert to fraction form
    156,768.26/216,341.76 = 85,149.68/x
  3. Step 3: Cross multiply
    156,768.26x = 216,341.76 × 85,149.68
  4. Step 4: Simplify right side
    156,768.26x = 18,421,431,634.64
  5. Step 5: Solve for x
    x = 18,421,431,634.64/156,768.26
  6. Step 6: Final answer
    x = 117,507.41

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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.