Home / 90,628.70-135,943.05-57,167.60

Finding the Fourth Proportional to 90,628.70, 135,943.05 and 57,167.60

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Solution

The fourth proportional to 90,628.70, 135,943.05 and 57,167.60 is: 85,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,628.70 : 135,943.05 = 57,167.60 : x
  2. Step 2: Convert to fraction form
    90,628.70/135,943.05 = 57,167.60/x
  3. Step 3: Cross multiply
    90,628.70x = 135,943.05 × 57,167.60
  4. Step 4: Simplify right side
    90,628.70x = 7,771,537,905.18
  5. Step 5: Solve for x
    x = 7,771,537,905.18/90,628.70
  6. Step 6: Final answer
    x = 85,751.40

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Similar ratio
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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.