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Finding the Fourth Proportional to 104,889.76, 144,622.52 and 85,698.80

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Solution

The fourth proportional to 104,889.76, 144,622.52 and 85,698.80 is: 118,161.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,889.76 : 144,622.52 = 85,698.80 : x
  2. Step 2: Convert to fraction form
    104,889.76/144,622.52 = 85,698.80/x
  3. Step 3: Cross multiply
    104,889.76x = 144,622.52 × 85,698.80
  4. Step 4: Simplify right side
    104,889.76x = 12,393,976,416.98
  5. Step 5: Solve for x
    x = 12,393,976,416.98/104,889.76
  6. Step 6: Final answer
    x = 118,161.93

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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.