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Finding the Fourth Proportional to 156,781.70, 234,826.95 and 136,045.70

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Solution

The fourth proportional to 156,781.70, 234,826.95 and 136,045.70 is: 203,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.70 : 234,826.95 = 136,045.70 : x
  2. Step 2: Convert to fraction form
    156,781.70/234,826.95 = 136,045.70/x
  3. Step 3: Cross multiply
    156,781.70x = 234,826.95 × 136,045.70
  4. Step 4: Simplify right side
    156,781.70x = 31,947,196,791.62
  5. Step 5: Solve for x
    x = 31,947,196,791.62/156,781.70
  6. Step 6: Final answer
    x = 203,768.66

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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.