Home / 143,621.12-215,463.64-43,789.08

Finding the Fourth Proportional to 143,621.12, 215,463.64 and 43,789.08

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Solution

The fourth proportional to 143,621.12, 215,463.64 and 43,789.08 is: 65,693.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,621.12 : 215,463.64 = 43,789.08 : x
  2. Step 2: Convert to fraction form
    143,621.12/215,463.64 = 43,789.08/x
  3. Step 3: Cross multiply
    143,621.12x = 215,463.64 × 43,789.08
  4. Step 4: Simplify right side
    143,621.12x = 9,434,954,569.05
  5. Step 5: Solve for x
    x = 9,434,954,569.05/143,621.12
  6. Step 6: Final answer
    x = 65,693.36

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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.