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Finding the Fourth Proportional to 127,321.20, 190,852.20 and 74,703.60

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Solution

The fourth proportional to 127,321.20, 190,852.20 and 74,703.60 is: 111,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,321.20 : 190,852.20 = 74,703.60 : x
  2. Step 2: Convert to fraction form
    127,321.20/190,852.20 = 74,703.60/x
  3. Step 3: Cross multiply
    127,321.20x = 190,852.20 × 74,703.60
  4. Step 4: Simplify right side
    127,321.20x = 14,257,346,407.92
  5. Step 5: Solve for x
    x = 14,257,346,407.92/127,321.20
  6. Step 6: Final answer
    x = 111,979.36

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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.