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Finding the Fourth Proportional to 100,281.70, 138,300.41 and 62,035.17

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Solution

The fourth proportional to 100,281.70, 138,300.41 and 62,035.17 is: 85,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,281.70 : 138,300.41 = 62,035.17 : x
  2. Step 2: Convert to fraction form
    100,281.70/138,300.41 = 62,035.17/x
  3. Step 3: Cross multiply
    100,281.70x = 138,300.41 × 62,035.17
  4. Step 4: Simplify right side
    100,281.70x = 8,579,489,081.88
  5. Step 5: Solve for x
    x = 8,579,489,081.88/100,281.70
  6. Step 6: Final answer
    x = 85,553.89

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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.