Home / 143,372.40-214,985.70-84,226.20

Finding the Fourth Proportional to 143,372.40, 214,985.70 and 84,226.20

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Solution

The fourth proportional to 143,372.40, 214,985.70 and 84,226.20 is: 126,296.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,372.40 : 214,985.70 = 84,226.20 : x
  2. Step 2: Convert to fraction form
    143,372.40/214,985.70 = 84,226.20/x
  3. Step 3: Cross multiply
    143,372.40x = 214,985.70 × 84,226.20
  4. Step 4: Simplify right side
    143,372.40x = 18,107,428,565.34
  5. Step 5: Solve for x
    x = 18,107,428,565.34/143,372.40
  6. Step 6: Final answer
    x = 126,296.47

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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.