Home / 140,774.81-194,269.20-77,112.59

Finding the Fourth Proportional to 140,774.81, 194,269.20 and 77,112.59

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Solution

The fourth proportional to 140,774.81, 194,269.20 and 77,112.59 is: 106,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,774.81 : 194,269.20 = 77,112.59 : x
  2. Step 2: Convert to fraction form
    140,774.81/194,269.20 = 77,112.59/x
  3. Step 3: Cross multiply
    140,774.81x = 194,269.20 × 77,112.59
  4. Step 4: Simplify right side
    140,774.81x = 14,980,600,197.88
  5. Step 5: Solve for x
    x = 14,980,600,197.88/140,774.81
  6. Step 6: Final answer
    x = 106,415.35

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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.