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Finding the Fourth Proportional to 156,216.31, 215,578.71 and 84,596.44

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Solution

The fourth proportional to 156,216.31, 215,578.71 and 84,596.44 is: 116,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,216.31 : 215,578.71 = 84,596.44 : x
  2. Step 2: Convert to fraction form
    156,216.31/215,578.71 = 84,596.44/x
  3. Step 3: Cross multiply
    156,216.31x = 215,578.71 × 84,596.44
  4. Step 4: Simplify right side
    156,216.31x = 18,237,191,405.79
  5. Step 5: Solve for x
    x = 18,237,191,405.79/156,216.31
  6. Step 6: Final answer
    x = 116,743.20

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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.