Home / 155,893.32-215,137.62-88,821

Finding the Fourth Proportional to 155,893.32, 215,137.62 and 88,821

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Solution

The fourth proportional to 155,893.32, 215,137.62 and 88,821 is: 122,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,893.32 : 215,137.62 = 88,821 : x
  2. Step 2: Convert to fraction form
    155,893.32/215,137.62 = 88,821/x
  3. Step 3: Cross multiply
    155,893.32x = 215,137.62 × 88,821
  4. Step 4: Simplify right side
    155,893.32x = 19,108,738,546.02
  5. Step 5: Solve for x
    x = 19,108,738,546.02/155,893.32
  6. Step 6: Final answer
    x = 122,575.74

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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.