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Finding the Fourth Proportional to 118,765.17, 178,164.15 and 39,901.95

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Solution

The fourth proportional to 118,765.17, 178,164.15 and 39,901.95 is: 59,858.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,765.17 : 178,164.15 = 39,901.95 : x
  2. Step 2: Convert to fraction form
    118,765.17/178,164.15 = 39,901.95/x
  3. Step 3: Cross multiply
    118,765.17x = 178,164.15 × 39,901.95
  4. Step 4: Simplify right side
    118,765.17x = 7,109,097,005.09
  5. Step 5: Solve for x
    x = 7,109,097,005.09/118,765.17
  6. Step 6: Final answer
    x = 59,858.43

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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.