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Finding the Fourth Proportional to 147,415.36, 203,375.46 and 90,728.32

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Solution

The fourth proportional to 147,415.36, 203,375.46 and 90,728.32 is: 125,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,415.36 : 203,375.46 = 90,728.32 : x
  2. Step 2: Convert to fraction form
    147,415.36/203,375.46 = 90,728.32/x
  3. Step 3: Cross multiply
    147,415.36x = 203,375.46 × 90,728.32
  4. Step 4: Simplify right side
    147,415.36x = 18,451,913,815.03
  5. Step 5: Solve for x
    x = 18,451,913,815.03/147,415.36
  6. Step 6: Final answer
    x = 125,169.55

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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.