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Finding the Fourth Proportional to 121,405.72, 182,161.15 and 65,180.22

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Solution

The fourth proportional to 121,405.72, 182,161.15 and 65,180.22 is: 97,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,405.72 : 182,161.15 = 65,180.22 : x
  2. Step 2: Convert to fraction form
    121,405.72/182,161.15 = 65,180.22/x
  3. Step 3: Cross multiply
    121,405.72x = 182,161.15 × 65,180.22
  4. Step 4: Simplify right side
    121,405.72x = 11,873,303,832.45
  5. Step 5: Solve for x
    x = 11,873,303,832.45/121,405.72
  6. Step 6: Final answer
    x = 97,798.55

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1.5x scale

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.