Home / 143,720.25-215,486.47-68,837.97

Finding the Fourth Proportional to 143,720.25, 215,486.47 and 68,837.97

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Solution

The fourth proportional to 143,720.25, 215,486.47 and 68,837.97 is: 103,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,720.25 : 215,486.47 = 68,837.97 : x
  2. Step 2: Convert to fraction form
    143,720.25/215,486.47 = 68,837.97/x
  3. Step 3: Cross multiply
    143,720.25x = 215,486.47 × 68,837.97
  4. Step 4: Simplify right side
    143,720.25x = 14,833,651,157.27
  5. Step 5: Solve for x
    x = 14,833,651,157.27/143,720.25
  6. Step 6: Final answer
    x = 103,211.98

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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.