Home / 100,106.40-150,115.32-29,972.64

Finding the Fourth Proportional to 100,106.40, 150,115.32 and 29,972.64

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Solution

The fourth proportional to 100,106.40, 150,115.32 and 29,972.64 is: 44,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,106.40 : 150,115.32 = 29,972.64 : x
  2. Step 2: Convert to fraction form
    100,106.40/150,115.32 = 29,972.64/x
  3. Step 3: Cross multiply
    100,106.40x = 150,115.32 × 29,972.64
  4. Step 4: Simplify right side
    100,106.40x = 4,499,352,444.84
  5. Step 5: Solve for x
    x = 4,499,352,444.84/100,106.40
  6. Step 6: Final answer
    x = 44,945.70

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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.