Home / 156,165.20-215,508-84,545.81

Finding the Fourth Proportional to 156,165.20, 215,508 and 84,545.81

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Solution

The fourth proportional to 156,165.20, 215,508 and 84,545.81 is: 116,673.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,165.20 : 215,508 = 84,545.81 : x
  2. Step 2: Convert to fraction form
    156,165.20/215,508 = 84,545.81/x
  3. Step 3: Cross multiply
    156,165.20x = 215,508 × 84,545.81
  4. Step 4: Simplify right side
    156,165.20x = 18,220,298,421.48
  5. Step 5: Solve for x
    x = 18,220,298,421.48/156,165.20
  6. Step 6: Final answer
    x = 116,673.23

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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.