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Finding the Fourth Proportional to 156,216.59, 215,578.90 and 84,596.61

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Solution

The fourth proportional to 156,216.59, 215,578.90 and 84,596.61 is: 116,743.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,216.59 : 215,578.90 = 84,596.61 : x
  2. Step 2: Convert to fraction form
    156,216.59/215,578.90 = 84,596.61/x
  3. Step 3: Cross multiply
    156,216.59x = 215,578.90 × 84,596.61
  4. Step 4: Simplify right side
    156,216.59x = 18,237,244,127.53
  5. Step 5: Solve for x
    x = 18,237,244,127.53/156,216.59
  6. Step 6: Final answer
    x = 116,743.32

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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.