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Finding the Fourth Proportional to 156,604.88, 216,114.87 and 84,984.90

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Solution

The fourth proportional to 156,604.88, 216,114.87 and 84,984.90 is: 117,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,604.88 : 216,114.87 = 84,984.90 : x
  2. Step 2: Convert to fraction form
    156,604.88/216,114.87 = 84,984.90/x
  3. Step 3: Cross multiply
    156,604.88x = 216,114.87 × 84,984.90
  4. Step 4: Simplify right side
    156,604.88x = 18,366,500,615.46
  5. Step 5: Solve for x
    x = 18,366,500,615.46/156,604.88
  6. Step 6: Final answer
    x = 117,279.24

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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.