Home / 121,019.36-181,157.48-109,614.56

Finding the Fourth Proportional to 121,019.36, 181,157.48 and 109,614.56

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Solution

The fourth proportional to 121,019.36, 181,157.48 and 109,614.56 is: 164,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,019.36 : 181,157.48 = 109,614.56 : x
  2. Step 2: Convert to fraction form
    121,019.36/181,157.48 = 109,614.56/x
  3. Step 3: Cross multiply
    121,019.36x = 181,157.48 × 109,614.56
  4. Step 4: Simplify right side
    121,019.36x = 19,857,497,460.91
  5. Step 5: Solve for x
    x = 19,857,497,460.91/121,019.36
  6. Step 6: Final answer
    x = 164,085.30

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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.