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Finding the Fourth Proportional to 121,108.76, 181,684.86 and 50,031.40

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Solution

The fourth proportional to 121,108.76, 181,684.86 and 50,031.40 is: 75,056.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,108.76 : 181,684.86 = 50,031.40 : x
  2. Step 2: Convert to fraction form
    121,108.76/181,684.86 = 50,031.40/x
  3. Step 3: Cross multiply
    121,108.76x = 181,684.86 × 50,031.40
  4. Step 4: Simplify right side
    121,108.76x = 9,089,947,904.60
  5. Step 5: Solve for x
    x = 9,089,947,904.60/121,108.76
  6. Step 6: Final answer
    x = 75,056.07

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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.