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Finding the Fourth Proportional to 99,651.32, 137,518.86 and 54,939.32

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Solution

The fourth proportional to 99,651.32, 137,518.86 and 54,939.32 is: 75,816.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,651.32 : 137,518.86 = 54,939.32 : x
  2. Step 2: Convert to fraction form
    99,651.32/137,518.86 = 54,939.32/x
  3. Step 3: Cross multiply
    99,651.32x = 137,518.86 × 54,939.32
  4. Step 4: Simplify right side
    99,651.32x = 7,555,192,655.58
  5. Step 5: Solve for x
    x = 7,555,192,655.58/99,651.32
  6. Step 6: Final answer
    x = 75,816.28

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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.