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Finding the Fourth Proportional to 99,883.30, 137,833.68 and 54,560.63

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Solution

The fourth proportional to 99,883.30, 137,833.68 and 54,560.63 is: 75,290.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,883.30 : 137,833.68 = 54,560.63 : x
  2. Step 2: Convert to fraction form
    99,883.30/137,833.68 = 54,560.63/x
  3. Step 3: Cross multiply
    99,883.30x = 137,833.68 × 54,560.63
  4. Step 4: Simplify right side
    99,883.30x = 7,520,292,416.02
  5. Step 5: Solve for x
    x = 7,520,292,416.02/99,883.30
  6. Step 6: Final answer
    x = 75,290.79

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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.