Home / 127,128.87-190,687.13-47,182.41

Finding the Fourth Proportional to 127,128.87, 190,687.13 and 47,182.41

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Solution

The fourth proportional to 127,128.87, 190,687.13 and 47,182.41 is: 70,771.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.87 : 190,687.13 = 47,182.41 : x
  2. Step 2: Convert to fraction form
    127,128.87/190,687.13 = 47,182.41/x
  3. Step 3: Cross multiply
    127,128.87x = 190,687.13 × 47,182.41
  4. Step 4: Simplify right side
    127,128.87x = 8,997,078,113.47
  5. Step 5: Solve for x
    x = 8,997,078,113.47/127,128.87
  6. Step 6: Final answer
    x = 70,771.32

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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.