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Finding the Fourth Proportional to 108,000.70, 162,001.05 and 68,343.10

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Solution

The fourth proportional to 108,000.70, 162,001.05 and 68,343.10 is: 102,514.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,000.70 : 162,001.05 = 68,343.10 : x
  2. Step 2: Convert to fraction form
    108,000.70/162,001.05 = 68,343.10/x
  3. Step 3: Cross multiply
    108,000.70x = 162,001.05 × 68,343.10
  4. Step 4: Simplify right side
    108,000.70x = 11,071,653,960.26
  5. Step 5: Solve for x
    x = 11,071,653,960.26/108,000.70
  6. Step 6: Final answer
    x = 102,514.65

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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.