Home / 121,284.56-181,623-76,777.04

Finding the Fourth Proportional to 121,284.56, 181,623 and 76,777.04

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Solution

The fourth proportional to 121,284.56, 181,623 and 76,777.04 is: 114,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,284.56 : 181,623 = 76,777.04 : x
  2. Step 2: Convert to fraction form
    121,284.56/181,623 = 76,777.04/x
  3. Step 3: Cross multiply
    121,284.56x = 181,623 × 76,777.04
  4. Step 4: Simplify right side
    121,284.56x = 13,944,476,335.92
  5. Step 5: Solve for x
    x = 13,944,476,335.92/121,284.56
  6. Step 6: Final answer
    x = 114,973.22

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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.