Home / 131,440.70-197,161.05-81,674.30

Finding the Fourth Proportional to 131,440.70, 197,161.05 and 81,674.30

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Solution

The fourth proportional to 131,440.70, 197,161.05 and 81,674.30 is: 122,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,440.70 : 197,161.05 = 81,674.30 : x
  2. Step 2: Convert to fraction form
    131,440.70/197,161.05 = 81,674.30/x
  3. Step 3: Cross multiply
    131,440.70x = 197,161.05 × 81,674.30
  4. Step 4: Simplify right side
    131,440.70x = 16,102,990,746.02
  5. Step 5: Solve for x
    x = 16,102,990,746.02/131,440.70
  6. Step 6: Final answer
    x = 122,511.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.