Home / 120,749.49-166,518.27-72,343.62

Finding the Fourth Proportional to 120,749.49, 166,518.27 and 72,343.62

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Solution

The fourth proportional to 120,749.49, 166,518.27 and 72,343.62 is: 99,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,749.49 : 166,518.27 = 72,343.62 : x
  2. Step 2: Convert to fraction form
    120,749.49/166,518.27 = 72,343.62/x
  3. Step 3: Cross multiply
    120,749.49x = 166,518.27 × 72,343.62
  4. Step 4: Simplify right side
    120,749.49x = 12,046,534,447.94
  5. Step 5: Solve for x
    x = 12,046,534,447.94/120,749.49
  6. Step 6: Final answer
    x = 99,764.68

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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.