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Finding the Fourth Proportional to 108,702.39, 150,010.83 and 65,675.90

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Solution

The fourth proportional to 108,702.39, 150,010.83 and 65,675.90 is: 90,633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,702.39 : 150,010.83 = 65,675.90 : x
  2. Step 2: Convert to fraction form
    108,702.39/150,010.83 = 65,675.90/x
  3. Step 3: Cross multiply
    108,702.39x = 150,010.83 × 65,675.90
  4. Step 4: Simplify right side
    108,702.39x = 9,852,095,519.94
  5. Step 5: Solve for x
    x = 9,852,095,519.94/108,702.39
  6. Step 6: Final answer
    x = 90,633.66

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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.