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Finding the Fourth Proportional to 111,934.80, 167,756.40 and 45,320.40

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Solution

The fourth proportional to 111,934.80, 167,756.40 and 45,320.40 is: 67,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,934.80 : 167,756.40 = 45,320.40 : x
  2. Step 2: Convert to fraction form
    111,934.80/167,756.40 = 45,320.40/x
  3. Step 3: Cross multiply
    111,934.80x = 167,756.40 × 45,320.40
  4. Step 4: Simplify right side
    111,934.80x = 7,602,787,150.56
  5. Step 5: Solve for x
    x = 7,602,787,150.56/111,934.80
  6. Step 6: Final answer
    x = 67,921.57

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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.