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Finding the Fourth Proportional to 127,215.70, 190,911 and 44,109.70

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Solution

The fourth proportional to 127,215.70, 190,911 and 44,109.70 is: 66,194.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,215.70 : 190,911 = 44,109.70 : x
  2. Step 2: Convert to fraction form
    127,215.70/190,911 = 44,109.70/x
  3. Step 3: Cross multiply
    127,215.70x = 190,911 × 44,109.70
  4. Step 4: Simplify right side
    127,215.70x = 8,421,026,936.70
  5. Step 5: Solve for x
    x = 8,421,026,936.70/127,215.70
  6. Step 6: Final answer
    x = 66,194.87

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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.