Home / 121,009.86-181,459.26-71,113.44

Finding the Fourth Proportional to 121,009.86, 181,459.26 and 71,113.44

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Solution

The fourth proportional to 121,009.86, 181,459.26 and 71,113.44 is: 106,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,009.86 : 181,459.26 = 71,113.44 : x
  2. Step 2: Convert to fraction form
    121,009.86/181,459.26 = 71,113.44/x
  3. Step 3: Cross multiply
    121,009.86x = 181,459.26 × 71,113.44
  4. Step 4: Simplify right side
    121,009.86x = 12,904,192,198.45
  5. Step 5: Solve for x
    x = 12,904,192,198.45/121,009.86
  6. Step 6: Final answer
    x = 106,637.53

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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.