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Finding the Fourth Proportional to 99,803.55, 137,729.25 and 54,482.54

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Solution

The fourth proportional to 99,803.55, 137,729.25 and 54,482.54 is: 75,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,803.55 : 137,729.25 = 54,482.54 : x
  2. Step 2: Convert to fraction form
    99,803.55/137,729.25 = 54,482.54/x
  3. Step 3: Cross multiply
    99,803.55x = 137,729.25 × 54,482.54
  4. Step 4: Simplify right side
    99,803.55x = 7,503,838,683.65
  5. Step 5: Solve for x
    x = 7,503,838,683.65/99,803.55
  6. Step 6: Final answer
    x = 75,186.09

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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.