Home / 156,916.36-216,545.07-85,296.61

Finding the Fourth Proportional to 156,916.36, 216,545.07 and 85,296.61

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Solution

The fourth proportional to 156,916.36, 216,545.07 and 85,296.61 is: 117,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,916.36 : 216,545.07 = 85,296.61 : x
  2. Step 2: Convert to fraction form
    156,916.36/216,545.07 = 85,296.61/x
  3. Step 3: Cross multiply
    156,916.36x = 216,545.07 × 85,296.61
  4. Step 4: Simplify right side
    156,916.36x = 18,470,560,383.21
  5. Step 5: Solve for x
    x = 18,470,560,383.21/156,916.36
  6. Step 6: Final answer
    x = 117,709.59

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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.