Home / 120,457.44-166,309.29-77,456.25

Finding the Fourth Proportional to 120,457.44, 166,309.29 and 77,456.25

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Solution

The fourth proportional to 120,457.44, 166,309.29 and 77,456.25 is: 106,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,457.44 : 166,309.29 = 77,456.25 : x
  2. Step 2: Convert to fraction form
    120,457.44/166,309.29 = 77,456.25/x
  3. Step 3: Cross multiply
    120,457.44x = 166,309.29 × 77,456.25
  4. Step 4: Simplify right side
    120,457.44x = 12,881,693,943.56
  5. Step 5: Solve for x
    x = 12,881,693,943.56/120,457.44
  6. Step 6: Final answer
    x = 106,939.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.