Home / 128,899.80-193,364.10-40,152.60

Finding the Fourth Proportional to 128,899.80, 193,364.10 and 40,152.60

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Solution

The fourth proportional to 128,899.80, 193,364.10 and 40,152.60 is: 60,233.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899.80 : 193,364.10 = 40,152.60 : x
  2. Step 2: Convert to fraction form
    128,899.80/193,364.10 = 40,152.60/x
  3. Step 3: Cross multiply
    128,899.80x = 193,364.10 × 40,152.60
  4. Step 4: Simplify right side
    128,899.80x = 7,764,071,361.66
  5. Step 5: Solve for x
    x = 7,764,071,361.66/128,899.80
  6. Step 6: Final answer
    x = 60,233.39

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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.