Home / 81,867,584.40-122,801,376.60-75,171,427.80

Finding the Fourth Proportional to 81,867,584.40, 122,801,376.60 and 75,171,427.80

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Solution

The fourth proportional to 81,867,584.40, 122,801,376.60 and 75,171,427.80 is: 112,757,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867,584.40 : 122,801,376.60 = 75,171,427.80 : x
  2. Step 2: Convert to fraction form
    81,867,584.40/122,801,376.60 = 75,171,427.80/x
  3. Step 3: Cross multiply
    81,867,584.40x = 122,801,376.60 × 75,171,427.80
  4. Step 4: Simplify right side
    81,867,584.40x = 9,231,154,814,827,508
  5. Step 5: Solve for x
    x = 9,231,154,814,827,508/81,867,584.40
  6. Step 6: Final answer
    x = 112,757,141.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.