Home / 140,739.48-194,220.40-77,076.72

Finding the Fourth Proportional to 140,739.48, 194,220.40 and 77,076.72

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Solution

The fourth proportional to 140,739.48, 194,220.40 and 77,076.72 is: 106,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,739.48 : 194,220.40 = 77,076.72 : x
  2. Step 2: Convert to fraction form
    140,739.48/194,220.40 = 77,076.72/x
  3. Step 3: Cross multiply
    140,739.48x = 194,220.40 × 77,076.72
  4. Step 4: Simplify right side
    140,739.48x = 14,969,871,389.09
  5. Step 5: Solve for x
    x = 14,969,871,389.09/140,739.48
  6. Step 6: Final answer
    x = 106,365.83

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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.