Home / 189,669.45-261,736.10-103,631.42

Finding the Fourth Proportional to 189,669.45, 261,736.10 and 103,631.42

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Solution

The fourth proportional to 189,669.45, 261,736.10 and 103,631.42 is: 143,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,669.45 : 261,736.10 = 103,631.42 : x
  2. Step 2: Convert to fraction form
    189,669.45/261,736.10 = 103,631.42/x
  3. Step 3: Cross multiply
    189,669.45x = 261,736.10 × 103,631.42
  4. Step 4: Simplify right side
    189,669.45x = 27,124,081,881.42
  5. Step 5: Solve for x
    x = 27,124,081,881.42/189,669.45
  6. Step 6: Final answer
    x = 143,007.12

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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.