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Finding the Fourth Proportional to 144,833.88, 199,859.76 and 81,159.36

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Solution

The fourth proportional to 144,833.88, 199,859.76 and 81,159.36 is: 111,993.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,833.88 : 199,859.76 = 81,159.36 : x
  2. Step 2: Convert to fraction form
    144,833.88/199,859.76 = 81,159.36/x
  3. Step 3: Cross multiply
    144,833.88x = 199,859.76 × 81,159.36
  4. Step 4: Simplify right side
    144,833.88x = 16,220,490,211.35
  5. Step 5: Solve for x
    x = 16,220,490,211.35/144,833.88
  6. Step 6: Final answer
    x = 111,993.76

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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.