Home / 143,157.39-214,308.40-86,826.75

Finding the Fourth Proportional to 143,157.39, 214,308.40 and 86,826.75

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Solution

The fourth proportional to 143,157.39, 214,308.40 and 86,826.75 is: 129,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,157.39 : 214,308.40 = 86,826.75 : x
  2. Step 2: Convert to fraction form
    143,157.39/214,308.40 = 86,826.75/x
  3. Step 3: Cross multiply
    143,157.39x = 214,308.40 × 86,826.75
  4. Step 4: Simplify right side
    143,157.39x = 18,607,701,869.70
  5. Step 5: Solve for x
    x = 18,607,701,869.70/143,157.39
  6. Step 6: Final answer
    x = 129,980.73

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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.