Home / 121,188.44-181,722.22-76,781.32

Finding the Fourth Proportional to 121,188.44, 181,722.22 and 76,781.32

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Solution

The fourth proportional to 121,188.44, 181,722.22 and 76,781.32 is: 115,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,188.44 : 181,722.22 = 76,781.32 : x
  2. Step 2: Convert to fraction form
    121,188.44/181,722.22 = 76,781.32/x
  3. Step 3: Cross multiply
    121,188.44x = 181,722.22 × 76,781.32
  4. Step 4: Simplify right side
    121,188.44x = 13,952,871,924.93
  5. Step 5: Solve for x
    x = 13,952,871,924.93/121,188.44
  6. Step 6: Final answer
    x = 115,133.69

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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.