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Finding the Fourth Proportional to 138,999.85, 208,338.48 and 63,962.46

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Solution

The fourth proportional to 138,999.85, 208,338.48 and 63,962.46 is: 95,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,999.85 : 208,338.48 = 63,962.46 : x
  2. Step 2: Convert to fraction form
    138,999.85/208,338.48 = 63,962.46/x
  3. Step 3: Cross multiply
    138,999.85x = 208,338.48 × 63,962.46
  4. Step 4: Simplify right side
    138,999.85x = 13,325,841,693.46
  5. Step 5: Solve for x
    x = 13,325,841,693.46/138,999.85
  6. Step 6: Final answer
    x = 95,869.47

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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.