Home / 189,678.15-261,752.79-103,635.29

Finding the Fourth Proportional to 189,678.15, 261,752.79 and 103,635.29

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Solution

The fourth proportional to 189,678.15, 261,752.79 and 103,635.29 is: 143,015.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,678.15 : 261,752.79 = 103,635.29 : x
  2. Step 2: Convert to fraction form
    189,678.15/261,752.79 = 103,635.29/x
  3. Step 3: Cross multiply
    189,678.15x = 261,752.79 × 103,635.29
  4. Step 4: Simplify right side
    189,678.15x = 27,126,826,299.96
  5. Step 5: Solve for x
    x = 27,126,826,299.96/189,678.15
  6. Step 6: Final answer
    x = 143,015.03

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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.