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Finding the Fourth Proportional to 111,640.64, 153,958.52 and 73,332.60

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Solution

The fourth proportional to 111,640.64, 153,958.52 and 73,332.60 is: 101,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,640.64 : 153,958.52 = 73,332.60 : x
  2. Step 2: Convert to fraction form
    111,640.64/153,958.52 = 73,332.60/x
  3. Step 3: Cross multiply
    111,640.64x = 153,958.52 × 73,332.60
  4. Step 4: Simplify right side
    111,640.64x = 11,290,178,563.75
  5. Step 5: Solve for x
    x = 11,290,178,563.75/111,640.64
  6. Step 6: Final answer
    x = 101,129.65

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1.5x scale

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.