Home / 189,213.12-261,115.92-104,333.28

Finding the Fourth Proportional to 189,213.12, 261,115.92 and 104,333.28

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Solution

The fourth proportional to 189,213.12, 261,115.92 and 104,333.28 is: 143,980.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,213.12 : 261,115.92 = 104,333.28 : x
  2. Step 2: Convert to fraction form
    189,213.12/261,115.92 = 104,333.28/x
  3. Step 3: Cross multiply
    189,213.12x = 261,115.92 × 104,333.28
  4. Step 4: Simplify right side
    189,213.12x = 27,243,080,393.82
  5. Step 5: Solve for x
    x = 27,243,080,393.82/189,213.12
  6. Step 6: Final answer
    x = 143,980.93

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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.