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Finding the Fourth Proportional to 156,984.30, 216,627.03 and 89,002.62

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Solution

The fourth proportional to 156,984.30, 216,627.03 and 89,002.62 is: 122,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,984.30 : 216,627.03 = 89,002.62 : x
  2. Step 2: Convert to fraction form
    156,984.30/216,627.03 = 89,002.62/x
  3. Step 3: Cross multiply
    156,984.30x = 216,627.03 × 89,002.62
  4. Step 4: Simplify right side
    156,984.30x = 19,280,373,232.82
  5. Step 5: Solve for x
    x = 19,280,373,232.82/156,984.30
  6. Step 6: Final answer
    x = 122,817.21

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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.