Home / 99,427.77-149,141.67-81,860.70

Finding the Fourth Proportional to 99,427.77, 149,141.67 and 81,860.70

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Solution

The fourth proportional to 99,427.77, 149,141.67 and 81,860.70 is: 122,791.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,427.77 : 149,141.67 = 81,860.70 : x
  2. Step 2: Convert to fraction form
    99,427.77/149,141.67 = 81,860.70/x
  3. Step 3: Cross multiply
    99,427.77x = 149,141.67 × 81,860.70
  4. Step 4: Simplify right side
    99,427.77x = 12,208,841,505.37
  5. Step 5: Solve for x
    x = 12,208,841,505.37/99,427.77
  6. Step 6: Final answer
    x = 122,791.06

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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.