Home / 115,719.44-159,607.06-81,692.45

Finding the Fourth Proportional to 115,719.44, 159,607.06 and 81,692.45

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Solution

The fourth proportional to 115,719.44, 159,607.06 and 81,692.45 is: 112,675.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,719.44 : 159,607.06 = 81,692.45 : x
  2. Step 2: Convert to fraction form
    115,719.44/159,607.06 = 81,692.45/x
  3. Step 3: Cross multiply
    115,719.44x = 159,607.06 × 81,692.45
  4. Step 4: Simplify right side
    115,719.44x = 13,038,691,364.96
  5. Step 5: Solve for x
    x = 13,038,691,364.96/115,719.44
  6. Step 6: Final answer
    x = 112,675.03

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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.