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Finding the Fourth Proportional to 156,568.70, 216,065.67 and 84,948.86

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Solution

The fourth proportional to 156,568.70, 216,065.67 and 84,948.86 is: 117,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,568.70 : 216,065.67 = 84,948.86 : x
  2. Step 2: Convert to fraction form
    156,568.70/216,065.67 = 84,948.86/x
  3. Step 3: Cross multiply
    156,568.70x = 216,065.67 × 84,948.86
  4. Step 4: Simplify right side
    156,568.70x = 18,354,532,351.64
  5. Step 5: Solve for x
    x = 18,354,532,351.64/156,568.70
  6. Step 6: Final answer
    x = 117,229.90

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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.