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Finding the Fourth Proportional to 156,099.62, 215,417.73 and 84,479.70

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Solution

The fourth proportional to 156,099.62, 215,417.73 and 84,479.70 is: 116,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,099.62 : 215,417.73 = 84,479.70 : x
  2. Step 2: Convert to fraction form
    156,099.62/215,417.73 = 84,479.70/x
  3. Step 3: Cross multiply
    156,099.62x = 215,417.73 × 84,479.70
  4. Step 4: Simplify right side
    156,099.62x = 18,198,425,205.08
  5. Step 5: Solve for x
    x = 18,198,425,205.08/156,099.62
  6. Step 6: Final answer
    x = 116,582.13

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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.