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Finding the Fourth Proportional to 189,030.88, 260,900.28 and 108,512.80

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Solution

The fourth proportional to 189,030.88, 260,900.28 and 108,512.80 is: 149,769.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,030.88 : 260,900.28 = 108,512.80 : x
  2. Step 2: Convert to fraction form
    189,030.88/260,900.28 = 108,512.80/x
  3. Step 3: Cross multiply
    189,030.88x = 260,900.28 × 108,512.80
  4. Step 4: Simplify right side
    189,030.88x = 28,311,019,903.58
  5. Step 5: Solve for x
    x = 28,311,019,903.58/189,030.88
  6. Step 6: Final answer
    x = 149,769.29

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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.