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Finding the Fourth Proportional to 118,685.27, 177,904.88 and 74,209.89

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Solution

The fourth proportional to 118,685.27, 177,904.88 and 74,209.89 is: 111,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,685.27 : 177,904.88 = 74,209.89 : x
  2. Step 2: Convert to fraction form
    118,685.27/177,904.88 = 74,209.89/x
  3. Step 3: Cross multiply
    118,685.27x = 177,904.88 × 74,209.89
  4. Step 4: Simplify right side
    118,685.27x = 13,202,301,575.26
  5. Step 5: Solve for x
    x = 13,202,301,575.26/118,685.27
  6. Step 6: Final answer
    x = 111,237.91

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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.