Home / 120,496.43-166,289.49-72,740.54

Finding the Fourth Proportional to 120,496.43, 166,289.49 and 72,740.54

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Solution

The fourth proportional to 120,496.43, 166,289.49 and 72,740.54 is: 100,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,496.43 : 166,289.49 = 72,740.54 : x
  2. Step 2: Convert to fraction form
    120,496.43/166,289.49 = 72,740.54/x
  3. Step 3: Cross multiply
    120,496.43x = 166,289.49 × 72,740.54
  4. Step 4: Simplify right side
    120,496.43x = 12,095,987,714.65
  5. Step 5: Solve for x
    x = 12,095,987,714.65/120,496.43
  6. Step 6: Final answer
    x = 100,384.61

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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.