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Finding the Fourth Proportional to 100,341.75, 150,585.93 and 80,855.58

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Solution

The fourth proportional to 100,341.75, 150,585.93 and 80,855.58 is: 121,342.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,341.75 : 150,585.93 = 80,855.58 : x
  2. Step 2: Convert to fraction form
    100,341.75/150,585.93 = 80,855.58/x
  3. Step 3: Cross multiply
    100,341.75x = 150,585.93 × 80,855.58
  4. Step 4: Simplify right side
    100,341.75x = 12,175,712,709.99
  5. Step 5: Solve for x
    x = 12,175,712,709.99/100,341.75
  6. Step 6: Final answer
    x = 121,342.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.