Home / 214,890.39-322,399.98-86,740.70

Finding the Fourth Proportional to 214,890.39, 322,399.98 and 86,740.70

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Solution

The fourth proportional to 214,890.39, 322,399.98 and 86,740.70 is: 130,137.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,890.39 : 322,399.98 = 86,740.70 : x
  2. Step 2: Convert to fraction form
    214,890.39/322,399.98 = 86,740.70/x
  3. Step 3: Cross multiply
    214,890.39x = 322,399.98 × 86,740.70
  4. Step 4: Simplify right side
    214,890.39x = 27,965,199,945.19
  5. Step 5: Solve for x
    x = 27,965,199,945.19/214,890.39
  6. Step 6: Final answer
    x = 130,137.04

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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.