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Finding the Fourth Proportional to 104,158.44, 143,391.06 and 99,398.07

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Solution

The fourth proportional to 104,158.44, 143,391.06 and 99,398.07 is: 136,837.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,158.44 : 143,391.06 = 99,398.07 : x
  2. Step 2: Convert to fraction form
    104,158.44/143,391.06 = 99,398.07/x
  3. Step 3: Cross multiply
    104,158.44x = 143,391.06 × 99,398.07
  4. Step 4: Simplify right side
    104,158.44x = 14,252,794,619.25
  5. Step 5: Solve for x
    x = 14,252,794,619.25/104,158.44
  6. Step 6: Final answer
    x = 136,837.64

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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.