Home / 100,405.12-150,608.76-30,285.04

Finding the Fourth Proportional to 100,405.12, 150,608.76 and 30,285.04

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Solution

The fourth proportional to 100,405.12, 150,608.76 and 30,285.04 is: 45,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,405.12 : 150,608.76 = 30,285.04 : x
  2. Step 2: Convert to fraction form
    100,405.12/150,608.76 = 30,285.04/x
  3. Step 3: Cross multiply
    100,405.12x = 150,608.76 × 30,285.04
  4. Step 4: Simplify right side
    100,405.12x = 4,561,192,320.95
  5. Step 5: Solve for x
    x = 4,561,192,320.95/100,405.12
  6. Step 6: Final answer
    x = 45,427.89

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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.