Home / 140,769.51-194,261.97-77,109.60

Finding the Fourth Proportional to 140,769.51, 194,261.97 and 77,109.60

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Solution

The fourth proportional to 140,769.51, 194,261.97 and 77,109.60 is: 106,411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,769.51 : 194,261.97 = 77,109.60 : x
  2. Step 2: Convert to fraction form
    140,769.51/194,261.97 = 77,109.60/x
  3. Step 3: Cross multiply
    140,769.51x = 194,261.97 × 77,109.60
  4. Step 4: Simplify right side
    140,769.51x = 14,979,462,801.91
  5. Step 5: Solve for x
    x = 14,979,462,801.91/140,769.51
  6. Step 6: Final answer
    x = 106,411.27

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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.