Home / 90,640.88-135,807.60-55,507.04

Finding the Fourth Proportional to 90,640.88, 135,807.60 and 55,507.04

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Solution

The fourth proportional to 90,640.88, 135,807.60 and 55,507.04 is: 83,166.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.88 : 135,807.60 = 55,507.04 : x
  2. Step 2: Convert to fraction form
    90,640.88/135,807.60 = 55,507.04/x
  3. Step 3: Cross multiply
    90,640.88x = 135,807.60 × 55,507.04
  4. Step 4: Simplify right side
    90,640.88x = 7,538,277,885.50
  5. Step 5: Solve for x
    x = 7,538,277,885.50/90,640.88
  6. Step 6: Final answer
    x = 83,166.42

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1.5x scale

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.