Home / 120,812.36-166,708.85-70,540.52

Finding the Fourth Proportional to 120,812.36, 166,708.85 and 70,540.52

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Solution

The fourth proportional to 120,812.36, 166,708.85 and 70,540.52 is: 97,338.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,812.36 : 166,708.85 = 70,540.52 : x
  2. Step 2: Convert to fraction form
    120,812.36/166,708.85 = 70,540.52/x
  3. Step 3: Cross multiply
    120,812.36x = 166,708.85 × 70,540.52
  4. Step 4: Simplify right side
    120,812.36x = 11,759,727,781.36
  5. Step 5: Solve for x
    x = 11,759,727,781.36/120,812.36
  6. Step 6: Final answer
    x = 97,338.78

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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.