Home / 128,749.80-193,125.06-40,016.28

Finding the Fourth Proportional to 128,749.80, 193,125.06 and 40,016.28

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Solution

The fourth proportional to 128,749.80, 193,125.06 and 40,016.28 is: 60,024.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,749.80 : 193,125.06 = 40,016.28 : x
  2. Step 2: Convert to fraction form
    128,749.80/193,125.06 = 40,016.28/x
  3. Step 3: Cross multiply
    128,749.80x = 193,125.06 × 40,016.28
  4. Step 4: Simplify right side
    128,749.80x = 7,728,146,475.98
  5. Step 5: Solve for x
    x = 7,728,146,475.98/128,749.80
  6. Step 6: Final answer
    x = 60,024.53

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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.