Home / 90,328.33-135,463.78-84,431.62

Finding the Fourth Proportional to 90,328.33, 135,463.78 and 84,431.62

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Solution

The fourth proportional to 90,328.33, 135,463.78 and 84,431.62 is: 126,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,328.33 : 135,463.78 = 84,431.62 : x
  2. Step 2: Convert to fraction form
    90,328.33/135,463.78 = 84,431.62/x
  3. Step 3: Cross multiply
    90,328.33x = 135,463.78 × 84,431.62
  4. Step 4: Simplify right side
    90,328.33x = 11,437,426,396.72
  5. Step 5: Solve for x
    x = 11,437,426,396.72/90,328.33
  6. Step 6: Final answer
    x = 126,620.59

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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.