Home / 189,021.32-260,887.20-108,503.28

Finding the Fourth Proportional to 189,021.32, 260,887.20 and 108,503.28

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Solution

The fourth proportional to 189,021.32, 260,887.20 and 108,503.28 is: 149,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,021.32 : 260,887.20 = 108,503.28 : x
  2. Step 2: Convert to fraction form
    189,021.32/260,887.20 = 108,503.28/x
  3. Step 3: Cross multiply
    189,021.32x = 260,887.20 × 108,503.28
  4. Step 4: Simplify right side
    189,021.32x = 28,307,116,910.02
  5. Step 5: Solve for x
    x = 28,307,116,910.02/189,021.32
  6. Step 6: Final answer
    x = 149,756.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.