Home / 131,518.32-181,439.52-80,511.84

Finding the Fourth Proportional to 131,518.32, 181,439.52 and 80,511.84

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Solution

The fourth proportional to 131,518.32, 181,439.52 and 80,511.84 is: 111,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,518.32 : 181,439.52 = 80,511.84 : x
  2. Step 2: Convert to fraction form
    131,518.32/181,439.52 = 80,511.84/x
  3. Step 3: Cross multiply
    131,518.32x = 181,439.52 × 80,511.84
  4. Step 4: Simplify right side
    131,518.32x = 14,608,029,603.92
  5. Step 5: Solve for x
    x = 14,608,029,603.92/131,518.32
  6. Step 6: Final answer
    x = 111,072.20

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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.