Home / 155,187.90-214,143.35-87,194.07

Finding the Fourth Proportional to 155,187.90, 214,143.35 and 87,194.07

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Solution

The fourth proportional to 155,187.90, 214,143.35 and 87,194.07 is: 120,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,187.90 : 214,143.35 = 87,194.07 : x
  2. Step 2: Convert to fraction form
    155,187.90/214,143.35 = 87,194.07/x
  3. Step 3: Cross multiply
    155,187.90x = 214,143.35 × 87,194.07
  4. Step 4: Simplify right side
    155,187.90x = 18,672,029,813.96
  5. Step 5: Solve for x
    x = 18,672,029,813.96/155,187.90
  6. Step 6: Final answer
    x = 120,318.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.