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Finding the Fourth Proportional to 118,595.42, 177,905.54 and 38,639.61

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Solution

The fourth proportional to 118,595.42, 177,905.54 and 38,639.61 is: 57,963.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,595.42 : 177,905.54 = 38,639.61 : x
  2. Step 2: Convert to fraction form
    118,595.42/177,905.54 = 38,639.61/x
  3. Step 3: Cross multiply
    118,595.42x = 177,905.54 × 38,639.61
  4. Step 4: Simplify right side
    118,595.42x = 6,874,199,792.91
  5. Step 5: Solve for x
    x = 6,874,199,792.91/118,595.42
  6. Step 6: Final answer
    x = 57,963.45

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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.