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Finding the Fourth Proportional to 108,213.36, 162,320.08 and 71,008.88

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Solution

The fourth proportional to 108,213.36, 162,320.08 and 71,008.88 is: 106,513.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,213.36 : 162,320.08 = 71,008.88 : x
  2. Step 2: Convert to fraction form
    108,213.36/162,320.08 = 71,008.88/x
  3. Step 3: Cross multiply
    108,213.36x = 162,320.08 × 71,008.88
  4. Step 4: Simplify right side
    108,213.36x = 11,526,167,082.31
  5. Step 5: Solve for x
    x = 11,526,167,082.31/108,213.36
  6. Step 6: Final answer
    x = 106,513.35

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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.