Home / 181,309.20-272,021.40-81,430.80

Finding the Fourth Proportional to 181,309.20, 272,021.40 and 81,430.80

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Solution

The fourth proportional to 181,309.20, 272,021.40 and 81,430.80 is: 122,172.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,309.20 : 272,021.40 = 81,430.80 : x
  2. Step 2: Convert to fraction form
    181,309.20/272,021.40 = 81,430.80/x
  3. Step 3: Cross multiply
    181,309.20x = 272,021.40 × 81,430.80
  4. Step 4: Simplify right side
    181,309.20x = 22,150,920,219.12
  5. Step 5: Solve for x
    x = 22,150,920,219.12/181,309.20
  6. Step 6: Final answer
    x = 122,172.07

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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.