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Finding the Fourth Proportional to 99,736.63, 137,659.64 and 65,751.12

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Solution

The fourth proportional to 99,736.63, 137,659.64 and 65,751.12 is: 90,751.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,736.63 : 137,659.64 = 65,751.12 : x
  2. Step 2: Convert to fraction form
    99,736.63/137,659.64 = 65,751.12/x
  3. Step 3: Cross multiply
    99,736.63x = 137,659.64 × 65,751.12
  4. Step 4: Simplify right side
    99,736.63x = 9,051,275,180.04
  5. Step 5: Solve for x
    x = 9,051,275,180.04/99,736.63
  6. Step 6: Final answer
    x = 90,751.77

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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.