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Finding the Fourth Proportional to 99,455.90, 137,244.90 and 54,133.94

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Solution

The fourth proportional to 99,455.90, 137,244.90 and 54,133.94 is: 74,702.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,455.90 : 137,244.90 = 54,133.94 : x
  2. Step 2: Convert to fraction form
    99,455.90/137,244.90 = 54,133.94/x
  3. Step 3: Cross multiply
    99,455.90x = 137,244.90 × 54,133.94
  4. Step 4: Simplify right side
    99,455.90x = 7,429,607,181.91
  5. Step 5: Solve for x
    x = 7,429,607,181.91/99,455.90
  6. Step 6: Final answer
    x = 74,702.53

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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.