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Finding the Fourth Proportional to 156,274.66, 215,648.38 and 88,294.49

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Solution

The fourth proportional to 156,274.66, 215,648.38 and 88,294.49 is: 121,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,274.66 : 215,648.38 = 88,294.49 : x
  2. Step 2: Convert to fraction form
    156,274.66/215,648.38 = 88,294.49/x
  3. Step 3: Cross multiply
    156,274.66x = 215,648.38 × 88,294.49
  4. Step 4: Simplify right side
    156,274.66x = 19,040,563,731.43
  5. Step 5: Solve for x
    x = 19,040,563,731.43/156,274.66
  6. Step 6: Final answer
    x = 121,840.38

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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.