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Finding the Fourth Proportional to 100,435.40, 150,653.98 and 25,555.60

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Solution

The fourth proportional to 100,435.40, 150,653.98 and 25,555.60 is: 38,333.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.40 : 150,653.98 = 25,555.60 : x
  2. Step 2: Convert to fraction form
    100,435.40/150,653.98 = 25,555.60/x
  3. Step 3: Cross multiply
    100,435.40x = 150,653.98 × 25,555.60
  4. Step 4: Simplify right side
    100,435.40x = 3,850,052,851.29
  5. Step 5: Solve for x
    x = 3,850,052,851.29/100,435.40
  6. Step 6: Final answer
    x = 38,333.62

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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.