Home / 127,286.40-190,929.60-71,299.20

Finding the Fourth Proportional to 127,286.40, 190,929.60 and 71,299.20

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Solution

The fourth proportional to 127,286.40, 190,929.60 and 71,299.20 is: 106,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,286.40 : 190,929.60 = 71,299.20 : x
  2. Step 2: Convert to fraction form
    127,286.40/190,929.60 = 71,299.20/x
  3. Step 3: Cross multiply
    127,286.40x = 190,929.60 × 71,299.20
  4. Step 4: Simplify right side
    127,286.40x = 13,613,127,736.32
  5. Step 5: Solve for x
    x = 13,613,127,736.32/127,286.40
  6. Step 6: Final answer
    x = 106,948.80

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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.