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Finding the Fourth Proportional to 118,678.81, 177,895.19 and 74,203.43

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Solution

The fourth proportional to 118,678.81, 177,895.19 and 74,203.43 is: 111,228.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,678.81 : 177,895.19 = 74,203.43 : x
  2. Step 2: Convert to fraction form
    118,678.81/177,895.19 = 74,203.43/x
  3. Step 3: Cross multiply
    118,678.81x = 177,895.19 × 74,203.43
  4. Step 4: Simplify right side
    118,678.81x = 13,200,433,377.20
  5. Step 5: Solve for x
    x = 13,200,433,377.20/118,678.81
  6. Step 6: Final answer
    x = 111,228.23

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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.