Home / 90,855.18-135,591.93-84,839.13

Finding the Fourth Proportional to 90,855.18, 135,591.93 and 84,839.13

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Solution

The fourth proportional to 90,855.18, 135,591.93 and 84,839.13 is: 126,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855.18 : 135,591.93 = 84,839.13 : x
  2. Step 2: Convert to fraction form
    90,855.18/135,591.93 = 84,839.13/x
  3. Step 3: Cross multiply
    90,855.18x = 135,591.93 × 84,839.13
  4. Step 4: Simplify right side
    90,855.18x = 11,503,501,376.22
  5. Step 5: Solve for x
    x = 11,503,501,376.22/90,855.18
  6. Step 6: Final answer
    x = 126,613.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.