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Finding the Fourth Proportional to 99,135, 136,807.26 and 54,423.96

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Solution

The fourth proportional to 99,135, 136,807.26 and 54,423.96 is: 75,105.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,135 : 136,807.26 = 54,423.96 : x
  2. Step 2: Convert to fraction form
    99,135/136,807.26 = 54,423.96/x
  3. Step 3: Cross multiply
    99,135x = 136,807.26 × 54,423.96
  4. Step 4: Simplify right side
    99,135x = 7,445,592,845.95
  5. Step 5: Solve for x
    x = 7,445,592,845.95/99,135
  6. Step 6: Final answer
    x = 75,105.59

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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.