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Finding the Fourth Proportional to 99,104.51, 136,764.31 and 53,782.49

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Solution

The fourth proportional to 99,104.51, 136,764.31 and 53,782.49 is: 74,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,104.51 : 136,764.31 = 53,782.49 : x
  2. Step 2: Convert to fraction form
    99,104.51/136,764.31 = 53,782.49/x
  3. Step 3: Cross multiply
    99,104.51x = 136,764.31 × 53,782.49
  4. Step 4: Simplify right side
    99,104.51x = 7,355,525,134.93
  5. Step 5: Solve for x
    x = 7,355,525,134.93/99,104.51
  6. Step 6: Final answer
    x = 74,219.88

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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.