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Finding the Fourth Proportional to 156,042.96, 215,559.73 and 124,171.08

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Solution

The fourth proportional to 156,042.96, 215,559.73 and 124,171.08 is: 171,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,042.96 : 215,559.73 = 124,171.08 : x
  2. Step 2: Convert to fraction form
    156,042.96/215,559.73 = 124,171.08/x
  3. Step 3: Cross multiply
    156,042.96x = 215,559.73 × 124,171.08
  4. Step 4: Simplify right side
    156,042.96x = 26,766,283,090.38
  5. Step 5: Solve for x
    x = 26,766,283,090.38/156,042.96
  6. Step 6: Final answer
    x = 171,531.51

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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.