Home / 143,728.32-215,585.16-54,975

Finding the Fourth Proportional to 143,728.32, 215,585.16 and 54,975

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Solution

The fourth proportional to 143,728.32, 215,585.16 and 54,975 is: 82,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,728.32 : 215,585.16 = 54,975 : x
  2. Step 2: Convert to fraction form
    143,728.32/215,585.16 = 54,975/x
  3. Step 3: Cross multiply
    143,728.32x = 215,585.16 × 54,975
  4. Step 4: Simplify right side
    143,728.32x = 11,851,794,171
  5. Step 5: Solve for x
    x = 11,851,794,171/143,728.32
  6. Step 6: Final answer
    x = 82,459.70

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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.