Home / 120,744,121.80-181,116,182.70-90,511,033.80

Finding the Fourth Proportional to 120,744,121.80, 181,116,182.70 and 90,511,033.80

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Solution

The fourth proportional to 120,744,121.80, 181,116,182.70 and 90,511,033.80 is: 135,766,550.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,744,121.80 : 181,116,182.70 = 90,511,033.80 : x
  2. Step 2: Convert to fraction form
    120,744,121.80/181,116,182.70 = 90,511,033.80/x
  3. Step 3: Cross multiply
    120,744,121.80x = 181,116,182.70 × 90,511,033.80
  4. Step 4: Simplify right side
    120,744,121.80x = 16,393,012,934,086,674
  5. Step 5: Solve for x
    x = 16,393,012,934,086,674/120,744,121.80
  6. Step 6: Final answer
    x = 135,766,550.70

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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.