Home / 121,213.45-181,831.91-41,307.76

Finding the Fourth Proportional to 121,213.45, 181,831.91 and 41,307.76

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Solution

The fourth proportional to 121,213.45, 181,831.91 and 41,307.76 is: 61,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,213.45 : 181,831.91 = 41,307.76 : x
  2. Step 2: Convert to fraction form
    121,213.45/181,831.91 = 41,307.76/x
  3. Step 3: Cross multiply
    121,213.45x = 181,831.91 × 41,307.76
  4. Step 4: Simplify right side
    121,213.45x = 7,511,068,898.62
  5. Step 5: Solve for x
    x = 7,511,068,898.62/121,213.45
  6. Step 6: Final answer
    x = 61,965.64

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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.