Home / 121,202.20-181,803.30-77,024.80

Finding the Fourth Proportional to 121,202.20, 181,803.30 and 77,024.80

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Solution

The fourth proportional to 121,202.20, 181,803.30 and 77,024.80 is: 115,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,202.20 : 181,803.30 = 77,024.80 : x
  2. Step 2: Convert to fraction form
    121,202.20/181,803.30 = 77,024.80/x
  3. Step 3: Cross multiply
    121,202.20x = 181,803.30 × 77,024.80
  4. Step 4: Simplify right side
    121,202.20x = 14,003,362,821.84
  5. Step 5: Solve for x
    x = 14,003,362,821.84/121,202.20
  6. Step 6: Final answer
    x = 115,537.20

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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.