Home / 134,125.20-185,108.86-80,439.75

Finding the Fourth Proportional to 134,125.20, 185,108.86 and 80,439.75

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Solution

The fourth proportional to 134,125.20, 185,108.86 and 80,439.75 is: 111,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,125.20 : 185,108.86 = 80,439.75 : x
  2. Step 2: Convert to fraction form
    134,125.20/185,108.86 = 80,439.75/x
  3. Step 3: Cross multiply
    134,125.20x = 185,108.86 × 80,439.75
  4. Step 4: Simplify right side
    134,125.20x = 14,890,109,495.64
  5. Step 5: Solve for x
    x = 14,890,109,495.64/134,125.20
  6. Step 6: Final answer
    x = 111,016.50

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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.