Home / 100,129.38-150,218.64-30,008.63

Finding the Fourth Proportional to 100,129.38, 150,218.64 and 30,008.63

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Solution

The fourth proportional to 100,129.38, 150,218.64 and 30,008.63 is: 45,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,129.38 : 150,218.64 = 30,008.63 : x
  2. Step 2: Convert to fraction form
    100,129.38/150,218.64 = 30,008.63/x
  3. Step 3: Cross multiply
    100,129.38x = 150,218.64 × 30,008.63
  4. Step 4: Simplify right side
    100,129.38x = 4,507,854,835.77
  5. Step 5: Solve for x
    x = 4,507,854,835.77/100,129.38
  6. Step 6: Final answer
    x = 45,020.30

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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.