Home / 144,785.16-199,811.52-81,143.46

Finding the Fourth Proportional to 144,785.16, 199,811.52 and 81,143.46

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Solution

The fourth proportional to 144,785.16, 199,811.52 and 81,143.46 is: 111,982.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,785.16 : 199,811.52 = 81,143.46 : x
  2. Step 2: Convert to fraction form
    144,785.16/199,811.52 = 81,143.46/x
  3. Step 3: Cross multiply
    144,785.16x = 199,811.52 × 81,143.46
  4. Step 4: Simplify right side
    144,785.16x = 16,213,398,080.66
  5. Step 5: Solve for x
    x = 16,213,398,080.66/144,785.16
  6. Step 6: Final answer
    x = 111,982.46

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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.