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Finding the Fourth Proportional to 74,182.40, 111,273.60 and 73,404.80

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Solution

The fourth proportional to 74,182.40, 111,273.60 and 73,404.80 is: 110,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,182.40 : 111,273.60 = 73,404.80 : x
  2. Step 2: Convert to fraction form
    74,182.40/111,273.60 = 73,404.80/x
  3. Step 3: Cross multiply
    74,182.40x = 111,273.60 × 73,404.80
  4. Step 4: Simplify right side
    74,182.40x = 8,168,016,353.28
  5. Step 5: Solve for x
    x = 8,168,016,353.28/74,182.40
  6. Step 6: Final answer
    x = 110,107.20

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1.5x scale

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.