Home / 120,754.24-166,538.60-77,741.12

Finding the Fourth Proportional to 120,754.24, 166,538.60 and 77,741.12

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Solution

The fourth proportional to 120,754.24, 166,538.60 and 77,741.12 is: 107,216.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,754.24 : 166,538.60 = 77,741.12 : x
  2. Step 2: Convert to fraction form
    120,754.24/166,538.60 = 77,741.12/x
  3. Step 3: Cross multiply
    120,754.24x = 166,538.60 × 77,741.12
  4. Step 4: Simplify right side
    120,754.24x = 12,946,897,287.23
  5. Step 5: Solve for x
    x = 12,946,897,287.23/120,754.24
  6. Step 6: Final answer
    x = 107,216.92

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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.