Home / 90,983.12-136,505.64-55,515.44

Finding the Fourth Proportional to 90,983.12, 136,505.64 and 55,515.44

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Solution

The fourth proportional to 90,983.12, 136,505.64 and 55,515.44 is: 83,292.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,983.12 : 136,505.64 = 55,515.44 : x
  2. Step 2: Convert to fraction form
    90,983.12/136,505.64 = 55,515.44/x
  3. Step 3: Cross multiply
    90,983.12x = 136,505.64 × 55,515.44
  4. Step 4: Simplify right side
    90,983.12x = 7,578,170,667.08
  5. Step 5: Solve for x
    x = 7,578,170,667.08/90,983.12
  6. Step 6: Final answer
    x = 83,292.05

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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.