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Finding the Fourth Proportional to 189,978.56, 262,056.20 and 125,448.39

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Solution

The fourth proportional to 189,978.56, 262,056.20 and 125,448.39 is: 173,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,978.56 : 262,056.20 = 125,448.39 : x
  2. Step 2: Convert to fraction form
    189,978.56/262,056.20 = 125,448.39/x
  3. Step 3: Cross multiply
    189,978.56x = 262,056.20 × 125,448.39
  4. Step 4: Simplify right side
    189,978.56x = 32,874,527,752.28
  5. Step 5: Solve for x
    x = 32,874,527,752.28/189,978.56
  6. Step 6: Final answer
    x = 173,043.36

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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.