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Finding the Fourth Proportional to 156,108.66, 215,429.11 and 84,488.59

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Solution

The fourth proportional to 156,108.66, 215,429.11 and 84,488.59 is: 116,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,108.66 : 215,429.11 = 84,488.59 : x
  2. Step 2: Convert to fraction form
    156,108.66/215,429.11 = 84,488.59/x
  3. Step 3: Cross multiply
    156,108.66x = 215,429.11 × 84,488.59
  4. Step 4: Simplify right side
    156,108.66x = 18,201,301,748.85
  5. Step 5: Solve for x
    x = 18,201,301,748.85/156,108.66
  6. Step 6: Final answer
    x = 116,593.80

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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.