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Finding the Fourth Proportional to 99,350.64, 137,103.12 and 54,028.64

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Solution

The fourth proportional to 99,350.64, 137,103.12 and 54,028.64 is: 74,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.64 : 137,103.12 = 54,028.64 : x
  2. Step 2: Convert to fraction form
    99,350.64/137,103.12 = 54,028.64/x
  3. Step 3: Cross multiply
    99,350.64x = 137,103.12 × 54,028.64
  4. Step 4: Simplify right side
    99,350.64x = 7,407,495,113.36
  5. Step 5: Solve for x
    x = 7,407,495,113.36/99,350.64
  6. Step 6: Final answer
    x = 74,559.11

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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.