Home / 140,739.12-194,218.56-77,076.63

Finding the Fourth Proportional to 140,739.12, 194,218.56 and 77,076.63

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Solution

The fourth proportional to 140,739.12, 194,218.56 and 77,076.63 is: 106,364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,739.12 : 194,218.56 = 77,076.63 : x
  2. Step 2: Convert to fraction form
    140,739.12/194,218.56 = 77,076.63/x
  3. Step 3: Cross multiply
    140,739.12x = 194,218.56 × 77,076.63
  4. Step 4: Simplify right side
    140,739.12x = 14,969,712,088.25
  5. Step 5: Solve for x
    x = 14,969,712,088.25/140,739.12
  6. Step 6: Final answer
    x = 106,364.97

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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.