Home / 103,138.60-154,752-43,181.08

Finding the Fourth Proportional to 103,138.60, 154,752 and 43,181.08

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Solution

The fourth proportional to 103,138.60, 154,752 and 43,181.08 is: 64,790.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138.60 : 154,752 = 43,181.08 : x
  2. Step 2: Convert to fraction form
    103,138.60/154,752 = 43,181.08/x
  3. Step 3: Cross multiply
    103,138.60x = 154,752 × 43,181.08
  4. Step 4: Simplify right side
    103,138.60x = 6,682,358,492.16
  5. Step 5: Solve for x
    x = 6,682,358,492.16/103,138.60
  6. Step 6: Final answer
    x = 64,790.08

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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.