Home / 128,904.14-193,356.21-40,164.82

Finding the Fourth Proportional to 128,904.14, 193,356.21 and 40,164.82

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Solution

The fourth proportional to 128,904.14, 193,356.21 and 40,164.82 is: 60,247.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,904.14 : 193,356.21 = 40,164.82 : x
  2. Step 2: Convert to fraction form
    128,904.14/193,356.21 = 40,164.82/x
  3. Step 3: Cross multiply
    128,904.14x = 193,356.21 × 40,164.82
  4. Step 4: Simplify right side
    128,904.14x = 7,766,117,370.53
  5. Step 5: Solve for x
    x = 7,766,117,370.53/128,904.14
  6. Step 6: Final answer
    x = 60,247.23

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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.