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Finding the Fourth Proportional to 136,804.80, 205,186.72 and 43,298.56

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Solution

The fourth proportional to 136,804.80, 205,186.72 and 43,298.56 is: 64,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,804.80 : 205,186.72 = 43,298.56 : x
  2. Step 2: Convert to fraction form
    136,804.80/205,186.72 = 43,298.56/x
  3. Step 3: Cross multiply
    136,804.80x = 205,186.72 × 43,298.56
  4. Step 4: Simplify right side
    136,804.80x = 8,884,289,507.12
  5. Step 5: Solve for x
    x = 8,884,289,507.12/136,804.80
  6. Step 6: Final answer
    x = 64,941.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.