Home / 143,825.31-215,739.09-43,987.32

Finding the Fourth Proportional to 143,825.31, 215,739.09 and 43,987.32

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Solution

The fourth proportional to 143,825.31, 215,739.09 and 43,987.32 is: 65,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,825.31 : 215,739.09 = 43,987.32 : x
  2. Step 2: Convert to fraction form
    143,825.31/215,739.09 = 43,987.32/x
  3. Step 3: Cross multiply
    143,825.31x = 215,739.09 × 43,987.32
  4. Step 4: Simplify right side
    143,825.31x = 9,489,784,388.34
  5. Step 5: Solve for x
    x = 9,489,784,388.34/143,825.31
  6. Step 6: Final answer
    x = 65,981.32

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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.