Home / 189,135.54-261,003.87-103,095.45

Finding the Fourth Proportional to 189,135.54, 261,003.87 and 103,095.45

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Solution

The fourth proportional to 189,135.54, 261,003.87 and 103,095.45 is: 142,269.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,135.54 : 261,003.87 = 103,095.45 : x
  2. Step 2: Convert to fraction form
    189,135.54/261,003.87 = 103,095.45/x
  3. Step 3: Cross multiply
    189,135.54x = 261,003.87 × 103,095.45
  4. Step 4: Simplify right side
    189,135.54x = 26,908,311,429.39
  5. Step 5: Solve for x
    x = 26,908,311,429.39/189,135.54
  6. Step 6: Final answer
    x = 142,269.99

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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.