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Finding the Fourth Proportional to 118,761.17, 178,158.15 and 39,897.95

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Solution

The fourth proportional to 118,761.17, 178,158.15 and 39,897.95 is: 59,852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,761.17 : 178,158.15 = 39,897.95 : x
  2. Step 2: Convert to fraction form
    118,761.17/178,158.15 = 39,897.95/x
  3. Step 3: Cross multiply
    118,761.17x = 178,158.15 × 39,897.95
  4. Step 4: Simplify right side
    118,761.17x = 7,108,144,070.00
  5. Step 5: Solve for x
    x = 7,108,144,070.00/118,761.17
  6. Step 6: Final answer
    x = 59,852.43

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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.