Home / 90,223.08-135,245.34-42,754.74

Finding the Fourth Proportional to 90,223.08, 135,245.34 and 42,754.74

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Solution

The fourth proportional to 90,223.08, 135,245.34 and 42,754.74 is: 64,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,223.08 : 135,245.34 = 42,754.74 : x
  2. Step 2: Convert to fraction form
    90,223.08/135,245.34 = 42,754.74/x
  3. Step 3: Cross multiply
    90,223.08x = 135,245.34 × 42,754.74
  4. Step 4: Simplify right side
    90,223.08x = 5,782,379,347.91
  5. Step 5: Solve for x
    x = 5,782,379,347.91/90,223.08
  6. Step 6: Final answer
    x = 64,089.80

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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.