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Finding the Fourth Proportional to 154,797.09, 213,621.77 and 85,887.85

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Solution

The fourth proportional to 154,797.09, 213,621.77 and 85,887.85 is: 118,526.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,797.09 : 213,621.77 = 85,887.85 : x
  2. Step 2: Convert to fraction form
    154,797.09/213,621.77 = 85,887.85/x
  3. Step 3: Cross multiply
    154,797.09x = 213,621.77 × 85,887.85
  4. Step 4: Simplify right side
    154,797.09x = 18,347,514,753.21
  5. Step 5: Solve for x
    x = 18,347,514,753.21/154,797.09
  6. Step 6: Final answer
    x = 118,526.22

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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.