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Finding the Fourth Proportional to 108,307.67, 162,461.90 and 71,103.15

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Solution

The fourth proportional to 108,307.67, 162,461.90 and 71,103.15 is: 106,654.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,307.67 : 162,461.90 = 71,103.15 : x
  2. Step 2: Convert to fraction form
    108,307.67/162,461.90 = 71,103.15/x
  3. Step 3: Cross multiply
    108,307.67x = 162,461.90 × 71,103.15
  4. Step 4: Simplify right side
    108,307.67x = 11,551,553,022.74
  5. Step 5: Solve for x
    x = 11,551,553,022.74/108,307.67
  6. Step 6: Final answer
    x = 106,654.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.