Home / 100,191.12-150,309.72-30,071.76

Finding the Fourth Proportional to 100,191.12, 150,309.72 and 30,071.76

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Solution

The fourth proportional to 100,191.12, 150,309.72 and 30,071.76 is: 45,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,191.12 : 150,309.72 = 30,071.76 : x
  2. Step 2: Convert to fraction form
    100,191.12/150,309.72 = 30,071.76/x
  3. Step 3: Cross multiply
    100,191.12x = 150,309.72 × 30,071.76
  4. Step 4: Simplify right side
    100,191.12x = 4,520,077,825.51
  5. Step 5: Solve for x
    x = 4,520,077,825.51/100,191.12
  6. Step 6: Final answer
    x = 45,114.56

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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.