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Finding the Fourth Proportional to 99,369.85, 137,132.16 and 54,048.82

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Solution

The fourth proportional to 99,369.85, 137,132.16 and 54,048.82 is: 74,588.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,369.85 : 137,132.16 = 54,048.82 : x
  2. Step 2: Convert to fraction form
    99,369.85/137,132.16 = 54,048.82/x
  3. Step 3: Cross multiply
    99,369.85x = 137,132.16 × 54,048.82
  4. Step 4: Simplify right side
    99,369.85x = 7,411,831,432.05
  5. Step 5: Solve for x
    x = 7,411,831,432.05/99,369.85
  6. Step 6: Final answer
    x = 74,588.33

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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.