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Finding the Fourth Proportional to 108,239.61, 162,290.64 and 94,939.31

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Solution

The fourth proportional to 108,239.61, 162,290.64 and 94,939.31 is: 142,348.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,239.61 : 162,290.64 = 94,939.31 : x
  2. Step 2: Convert to fraction form
    108,239.61/162,290.64 = 94,939.31/x
  3. Step 3: Cross multiply
    108,239.61x = 162,290.64 × 94,939.31
  4. Step 4: Simplify right side
    108,239.61x = 15,407,761,381.06
  5. Step 5: Solve for x
    x = 15,407,761,381.06/108,239.61
  6. Step 6: Final answer
    x = 142,348.64

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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.