Home / 156,721.11-216,269.19-85,099.56

Finding the Fourth Proportional to 156,721.11, 216,269.19 and 85,099.56

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Solution

The fourth proportional to 156,721.11, 216,269.19 and 85,099.56 is: 117,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.11 : 216,269.19 = 85,099.56 : x
  2. Step 2: Convert to fraction form
    156,721.11/216,269.19 = 85,099.56/x
  3. Step 3: Cross multiply
    156,721.11x = 216,269.19 × 85,099.56
  4. Step 4: Simplify right side
    156,721.11x = 18,404,412,910.56
  5. Step 5: Solve for x
    x = 18,404,412,910.56/156,721.11
  6. Step 6: Final answer
    x = 117,434.17

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1.5x scale

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.