Home / 140,459.21-193,832.39-76,796.33

Finding the Fourth Proportional to 140,459.21, 193,832.39 and 76,796.33

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Solution

The fourth proportional to 140,459.21, 193,832.39 and 76,796.33 is: 105,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,459.21 : 193,832.39 = 76,796.33 : x
  2. Step 2: Convert to fraction form
    140,459.21/193,832.39 = 76,796.33/x
  3. Step 3: Cross multiply
    140,459.21x = 193,832.39 × 76,796.33
  4. Step 4: Simplify right side
    140,459.21x = 14,885,615,803.15
  5. Step 5: Solve for x
    x = 14,885,615,803.15/140,459.21
  6. Step 6: Final answer
    x = 105,978.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.