Home / 90,369.66-135,586.78-54,903.34

Finding the Fourth Proportional to 90,369.66, 135,586.78 and 54,903.34

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Solution

The fourth proportional to 90,369.66, 135,586.78 and 54,903.34 is: 82,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,369.66 : 135,586.78 = 54,903.34 : x
  2. Step 2: Convert to fraction form
    90,369.66/135,586.78 = 54,903.34/x
  3. Step 3: Cross multiply
    90,369.66x = 135,586.78 × 54,903.34
  4. Step 4: Simplify right side
    90,369.66x = 7,444,167,081.85
  5. Step 5: Solve for x
    x = 7,444,167,081.85/90,369.66
  6. Step 6: Final answer
    x = 82,374.63

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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.