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Finding the Fourth Proportional to 118,796.69, 178,221.63 and 39,908.76

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Solution

The fourth proportional to 118,796.69, 178,221.63 and 39,908.76 is: 59,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,796.69 : 178,221.63 = 39,908.76 : x
  2. Step 2: Convert to fraction form
    118,796.69/178,221.63 = 39,908.76/x
  3. Step 3: Cross multiply
    118,796.69x = 178,221.63 × 39,908.76
  4. Step 4: Simplify right side
    118,796.69x = 7,112,604,777.15
  5. Step 5: Solve for x
    x = 7,112,604,777.15/118,796.69
  6. Step 6: Final answer
    x = 59,872.08

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1.5x scale

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.