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Finding the Fourth Proportional to 130,392.50, 179,764.97 and 111,475.49

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Solution

The fourth proportional to 130,392.50, 179,764.97 and 111,475.49 is: 153,685.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,392.50 : 179,764.97 = 111,475.49 : x
  2. Step 2: Convert to fraction form
    130,392.50/179,764.97 = 111,475.49/x
  3. Step 3: Cross multiply
    130,392.50x = 179,764.97 × 111,475.49
  4. Step 4: Simplify right side
    130,392.50x = 20,039,387,286.43
  5. Step 5: Solve for x
    x = 20,039,387,286.43/130,392.50
  6. Step 6: Final answer
    x = 153,685.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.