Home / 128,790.51-193,184.82-40,043.85

Finding the Fourth Proportional to 128,790.51, 193,184.82 and 40,043.85

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Solution

The fourth proportional to 128,790.51, 193,184.82 and 40,043.85 is: 60,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,790.51 : 193,184.82 = 40,043.85 : x
  2. Step 2: Convert to fraction form
    128,790.51/193,184.82 = 40,043.85/x
  3. Step 3: Cross multiply
    128,790.51x = 193,184.82 × 40,043.85
  4. Step 4: Simplify right side
    128,790.51x = 7,735,863,954.36
  5. Step 5: Solve for x
    x = 7,735,863,954.36/128,790.51
  6. Step 6: Final answer
    x = 60,065.48

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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.