Home / 128,071.70-192,090.54-38,112.80

Finding the Fourth Proportional to 128,071.70, 192,090.54 and 38,112.80

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Solution

The fourth proportional to 128,071.70, 192,090.54 and 38,112.80 is: 57,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,071.70 : 192,090.54 = 38,112.80 : x
  2. Step 2: Convert to fraction form
    128,071.70/192,090.54 = 38,112.80/x
  3. Step 3: Cross multiply
    128,071.70x = 192,090.54 × 38,112.80
  4. Step 4: Simplify right side
    128,071.70x = 7,321,108,235.72
  5. Step 5: Solve for x
    x = 7,321,108,235.72/128,071.70
  6. Step 6: Final answer
    x = 57,164.14

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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.