Home / 128,742.67-193,114.07-39,996.24

Finding the Fourth Proportional to 128,742.67, 193,114.07 and 39,996.24

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Solution

The fourth proportional to 128,742.67, 193,114.07 and 39,996.24 is: 59,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742.67 : 193,114.07 = 39,996.24 : x
  2. Step 2: Convert to fraction form
    128,742.67/193,114.07 = 39,996.24/x
  3. Step 3: Cross multiply
    128,742.67x = 193,114.07 × 39,996.24
  4. Step 4: Simplify right side
    128,742.67x = 7,723,836,691.10
  5. Step 5: Solve for x
    x = 7,723,836,691.10/128,742.67
  6. Step 6: Final answer
    x = 59,994.38

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Double scale
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Similar ratio
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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.