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Finding the Fourth Proportional to 156,089.03, 215,403.40 and 84,469.03

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Solution

The fourth proportional to 156,089.03, 215,403.40 and 84,469.03 is: 116,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,089.03 : 215,403.40 = 84,469.03 : x
  2. Step 2: Convert to fraction form
    156,089.03/215,403.40 = 84,469.03/x
  3. Step 3: Cross multiply
    156,089.03x = 215,403.40 × 84,469.03
  4. Step 4: Simplify right side
    156,089.03x = 18,194,916,314.78
  5. Step 5: Solve for x
    x = 18,194,916,314.78/156,089.03
  6. Step 6: Final answer
    x = 116,567.55

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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.