Home / 137,054.08-189,138.78-76,627.28

Finding the Fourth Proportional to 137,054.08, 189,138.78 and 76,627.28

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Solution

The fourth proportional to 137,054.08, 189,138.78 and 76,627.28 is: 105,747.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,054.08 : 189,138.78 = 76,627.28 : x
  2. Step 2: Convert to fraction form
    137,054.08/189,138.78 = 76,627.28/x
  3. Step 3: Cross multiply
    137,054.08x = 189,138.78 × 76,627.28
  4. Step 4: Simplify right side
    137,054.08x = 14,493,190,253.92
  5. Step 5: Solve for x
    x = 14,493,190,253.92/137,054.08
  6. Step 6: Final answer
    x = 105,747.97

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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.