Home / 121,321,990.80-181,982,986.20-91,088,902.80

Finding the Fourth Proportional to 121,321,990.80, 181,982,986.20 and 91,088,902.80

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Solution

The fourth proportional to 121,321,990.80, 181,982,986.20 and 91,088,902.80 is: 136,633,354.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,321,990.80 : 181,982,986.20 = 91,088,902.80 : x
  2. Step 2: Convert to fraction form
    121,321,990.80/181,982,986.20 = 91,088,902.80/x
  3. Step 3: Cross multiply
    121,321,990.80x = 181,982,986.20 × 91,088,902.80
  4. Step 4: Simplify right side
    121,321,990.80x = 16,576,630,541,225,540
  5. Step 5: Solve for x
    x = 16,576,630,541,225,540/121,321,990.80
  6. Step 6: Final answer
    x = 136,633,354.20

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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.