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Finding the Fourth Proportional to 156,134.46, 215,466.09 and 84,514.46

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Solution

The fourth proportional to 156,134.46, 215,466.09 and 84,514.46 is: 116,630.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,134.46 : 215,466.09 = 84,514.46 : x
  2. Step 2: Convert to fraction form
    156,134.46/215,466.09 = 84,514.46/x
  3. Step 3: Cross multiply
    156,134.46x = 215,466.09 × 84,514.46
  4. Step 4: Simplify right side
    156,134.46x = 18,210,000,244.66
  5. Step 5: Solve for x
    x = 18,210,000,244.66/156,134.46
  6. Step 6: Final answer
    x = 116,630.25

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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.