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Finding the Fourth Proportional to 144,305.70, 199,141.29 and 80,643.48

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Solution

The fourth proportional to 144,305.70, 199,141.29 and 80,643.48 is: 111,287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,305.70 : 199,141.29 = 80,643.48 : x
  2. Step 2: Convert to fraction form
    144,305.70/199,141.29 = 80,643.48/x
  3. Step 3: Cross multiply
    144,305.70x = 199,141.29 × 80,643.48
  4. Step 4: Simplify right side
    144,305.70x = 16,059,446,637.29
  5. Step 5: Solve for x
    x = 16,059,446,637.29/144,305.70
  6. Step 6: Final answer
    x = 111,287.68

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1.5x scale

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.