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Finding the Fourth Proportional to 100,074.20, 149,746.80 and 73,830.20

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Solution

The fourth proportional to 100,074.20, 149,746.80 and 73,830.20 is: 110,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,074.20 : 149,746.80 = 73,830.20 : x
  2. Step 2: Convert to fraction form
    100,074.20/149,746.80 = 73,830.20/x
  3. Step 3: Cross multiply
    100,074.20x = 149,746.80 × 73,830.20
  4. Step 4: Simplify right side
    100,074.20x = 11,055,836,193.36
  5. Step 5: Solve for x
    x = 11,055,836,193.36/100,074.20
  6. Step 6: Final answer
    x = 110,476.39

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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.