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Finding the Fourth Proportional to 99,183, 136,881.72 and 54,479.64

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Solution

The fourth proportional to 99,183, 136,881.72 and 54,479.64 is: 75,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,183 : 136,881.72 = 54,479.64 : x
  2. Step 2: Convert to fraction form
    99,183/136,881.72 = 54,479.64/x
  3. Step 3: Cross multiply
    99,183x = 136,881.72 × 54,479.64
  4. Step 4: Simplify right side
    99,183x = 7,457,266,828.18
  5. Step 5: Solve for x
    x = 7,457,266,828.18/99,183
  6. Step 6: Final answer
    x = 75,186.95

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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.