Home / 138,477.46-191,099.03-74,815.31

Finding the Fourth Proportional to 138,477.46, 191,099.03 and 74,815.31

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Solution

The fourth proportional to 138,477.46, 191,099.03 and 74,815.31 is: 103,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,477.46 : 191,099.03 = 74,815.31 : x
  2. Step 2: Convert to fraction form
    138,477.46/191,099.03 = 74,815.31/x
  3. Step 3: Cross multiply
    138,477.46x = 191,099.03 × 74,815.31
  4. Step 4: Simplify right side
    138,477.46x = 14,297,132,692.40
  5. Step 5: Solve for x
    x = 14,297,132,692.40/138,477.46
  6. Step 6: Final answer
    x = 103,245.20

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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.