Home / 121,379,401.80-182,069,102.70-84,391,108.20

Finding the Fourth Proportional to 121,379,401.80, 182,069,102.70 and 84,391,108.20

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Solution

The fourth proportional to 121,379,401.80, 182,069,102.70 and 84,391,108.20 is: 126,586,662.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,379,401.80 : 182,069,102.70 = 84,391,108.20 : x
  2. Step 2: Convert to fraction form
    121,379,401.80/182,069,102.70 = 84,391,108.20/x
  3. Step 3: Cross multiply
    121,379,401.80x = 182,069,102.70 × 84,391,108.20
  4. Step 4: Simplify right side
    121,379,401.80x = 15,365,013,345,832,612
  5. Step 5: Solve for x
    x = 15,365,013,345,832,612/121,379,401.80
  6. Step 6: Final answer
    x = 126,586,662.30

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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.