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Finding the Fourth Proportional to 98,811, 136,359.18 and 54,099

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Solution

The fourth proportional to 98,811, 136,359.18 and 54,099 is: 74,656.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,811 : 136,359.18 = 54,099 : x
  2. Step 2: Convert to fraction form
    98,811/136,359.18 = 54,099/x
  3. Step 3: Cross multiply
    98,811x = 136,359.18 × 54,099
  4. Step 4: Simplify right side
    98,811x = 7,376,895,278.82
  5. Step 5: Solve for x
    x = 7,376,895,278.82/98,811
  6. Step 6: Final answer
    x = 74,656.62

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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.