Home / 121,911.75-182,867.64-80,056.20

Finding the Fourth Proportional to 121,911.75, 182,867.64 and 80,056.20

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Solution

The fourth proportional to 121,911.75, 182,867.64 and 80,056.20 is: 120,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,911.75 : 182,867.64 = 80,056.20 : x
  2. Step 2: Convert to fraction form
    121,911.75/182,867.64 = 80,056.20/x
  3. Step 3: Cross multiply
    121,911.75x = 182,867.64 × 80,056.20
  4. Step 4: Simplify right side
    121,911.75x = 14,639,688,361.37
  5. Step 5: Solve for x
    x = 14,639,688,361.37/121,911.75
  6. Step 6: Final answer
    x = 120,084.31

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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.