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Finding the Fourth Proportional to 118,811.67, 177,792.81 and 103,200.63

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Solution

The fourth proportional to 118,811.67, 177,792.81 and 103,200.63 is: 154,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,811.67 : 177,792.81 = 103,200.63 : x
  2. Step 2: Convert to fraction form
    118,811.67/177,792.81 = 103,200.63/x
  3. Step 3: Cross multiply
    118,811.67x = 177,792.81 × 103,200.63
  4. Step 4: Simplify right side
    118,811.67x = 18,348,330,001.47
  5. Step 5: Solve for x
    x = 18,348,330,001.47/118,811.67
  6. Step 6: Final answer
    x = 154,432.05

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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.