Home / 189,379.32-261,341.94-103,336.36

Finding the Fourth Proportional to 189,379.32, 261,341.94 and 103,336.36

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Solution

The fourth proportional to 189,379.32, 261,341.94 and 103,336.36 is: 142,603.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,379.32 : 261,341.94 = 103,336.36 : x
  2. Step 2: Convert to fraction form
    189,379.32/261,341.94 = 103,336.36/x
  3. Step 3: Cross multiply
    189,379.32x = 261,341.94 × 103,336.36
  4. Step 4: Simplify right side
    189,379.32x = 27,006,124,529.09
  5. Step 5: Solve for x
    x = 27,006,124,529.09/189,379.32
  6. Step 6: Final answer
    x = 142,603.35

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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.