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Finding the Fourth Proportional to 125,714.40, 188,571.60 and 111,936.30

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Solution

The fourth proportional to 125,714.40, 188,571.60 and 111,936.30 is: 167,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,714.40 : 188,571.60 = 111,936.30 : x
  2. Step 2: Convert to fraction form
    125,714.40/188,571.60 = 111,936.30/x
  3. Step 3: Cross multiply
    125,714.40x = 188,571.60 × 111,936.30
  4. Step 4: Simplify right side
    125,714.40x = 21,108,007,189.08
  5. Step 5: Solve for x
    x = 21,108,007,189.08/125,714.40
  6. Step 6: Final answer
    x = 167,904.45

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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.