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Finding the Fourth Proportional to 144,818.35, 199,838.41 and 81,143.85

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Solution

The fourth proportional to 144,818.35, 199,838.41 and 81,143.85 is: 111,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,818.35 : 199,838.41 = 81,143.85 : x
  2. Step 2: Convert to fraction form
    144,818.35/199,838.41 = 81,143.85/x
  3. Step 3: Cross multiply
    144,818.35x = 199,838.41 × 81,143.85
  4. Step 4: Simplify right side
    144,818.35x = 16,215,657,965.28
  5. Step 5: Solve for x
    x = 16,215,657,965.28/144,818.35
  6. Step 6: Final answer
    x = 111,972.40

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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.