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Finding the Fourth Proportional to 153,847.44, 212,311.44 and 90,169.20

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Solution

The fourth proportional to 153,847.44, 212,311.44 and 90,169.20 is: 124,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,847.44 : 212,311.44 = 90,169.20 : x
  2. Step 2: Convert to fraction form
    153,847.44/212,311.44 = 90,169.20/x
  3. Step 3: Cross multiply
    153,847.44x = 212,311.44 × 90,169.20
  4. Step 4: Simplify right side
    153,847.44x = 19,143,952,695.65
  5. Step 5: Solve for x
    x = 19,143,952,695.65/153,847.44
  6. Step 6: Final answer
    x = 124,434.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.