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Finding the Fourth Proportional to 99,611.36, 137,464.20 and 54,899.36

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Solution

The fourth proportional to 99,611.36, 137,464.20 and 54,899.36 is: 75,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.36 : 137,464.20 = 54,899.36 : x
  2. Step 2: Convert to fraction form
    99,611.36/137,464.20 = 54,899.36/x
  3. Step 3: Cross multiply
    99,611.36x = 137,464.20 × 54,899.36
  4. Step 4: Simplify right side
    99,611.36x = 7,546,696,602.91
  5. Step 5: Solve for x
    x = 7,546,696,602.91/99,611.36
  6. Step 6: Final answer
    x = 75,761.41

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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.