Home / 137,356.08-189,542.32-76,912.86

Finding the Fourth Proportional to 137,356.08, 189,542.32 and 76,912.86

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Solution

The fourth proportional to 137,356.08, 189,542.32 and 76,912.86 is: 106,134.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,356.08 : 189,542.32 = 76,912.86 : x
  2. Step 2: Convert to fraction form
    137,356.08/189,542.32 = 76,912.86/x
  3. Step 3: Cross multiply
    137,356.08x = 189,542.32 × 76,912.86
  4. Step 4: Simplify right side
    137,356.08x = 14,578,241,922.24
  5. Step 5: Solve for x
    x = 14,578,241,922.24/137,356.08
  6. Step 6: Final answer
    x = 106,134.67

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1.5x scale

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.