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Finding the Fourth Proportional to 120,967.68, 166,920.48 and 73,243.20

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Solution

The fourth proportional to 120,967.68, 166,920.48 and 73,243.20 is: 101,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,967.68 : 166,920.48 = 73,243.20 : x
  2. Step 2: Convert to fraction form
    120,967.68/166,920.48 = 73,243.20/x
  3. Step 3: Cross multiply
    120,967.68x = 166,920.48 × 73,243.20
  4. Step 4: Simplify right side
    120,967.68x = 12,225,790,100.74
  5. Step 5: Solve for x
    x = 12,225,790,100.74/120,967.68
  6. Step 6: Final answer
    x = 101,066.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.