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Finding the Fourth Proportional to 118,086.70, 177,130.05 and 103,324.45

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Solution

The fourth proportional to 118,086.70, 177,130.05 and 103,324.45 is: 154,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,086.70 : 177,130.05 = 103,324.45 : x
  2. Step 2: Convert to fraction form
    118,086.70/177,130.05 = 103,324.45/x
  3. Step 3: Cross multiply
    118,086.70x = 177,130.05 × 103,324.45
  4. Step 4: Simplify right side
    118,086.70x = 18,301,864,994.72
  5. Step 5: Solve for x
    x = 18,301,864,994.72/118,086.70
  6. Step 6: Final answer
    x = 154,986.68

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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.