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Finding the Fourth Proportional to 100,205.60, 150,016.80 and 60,742.40

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Solution

The fourth proportional to 100,205.60, 150,016.80 and 60,742.40 is: 90,936.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,205.60 : 150,016.80 = 60,742.40 : x
  2. Step 2: Convert to fraction form
    100,205.60/150,016.80 = 60,742.40/x
  3. Step 3: Cross multiply
    100,205.60x = 150,016.80 × 60,742.40
  4. Step 4: Simplify right side
    100,205.60x = 9,112,380,472.32
  5. Step 5: Solve for x
    x = 9,112,380,472.32/100,205.60
  6. Step 6: Final answer
    x = 90,936.84

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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.