Home / 80,760.84-121,066.38-74,116.68

Finding the Fourth Proportional to 80,760.84, 121,066.38 and 74,116.68

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Solution

The fourth proportional to 80,760.84, 121,066.38 and 74,116.68 is: 111,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,760.84 : 121,066.38 = 74,116.68 : x
  2. Step 2: Convert to fraction form
    80,760.84/121,066.38 = 74,116.68/x
  3. Step 3: Cross multiply
    80,760.84x = 121,066.38 × 74,116.68
  4. Step 4: Simplify right side
    80,760.84x = 8,973,038,145.22
  5. Step 5: Solve for x
    x = 8,973,038,145.22/80,760.84
  6. Step 6: Final answer
    x = 111,106.30

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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.