Home / 149,631.75-206,496.79-81,652.45

Finding the Fourth Proportional to 149,631.75, 206,496.79 and 81,652.45

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Solution

The fourth proportional to 149,631.75, 206,496.79 and 81,652.45 is: 112,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,631.75 : 206,496.79 = 81,652.45 : x
  2. Step 2: Convert to fraction form
    149,631.75/206,496.79 = 81,652.45/x
  3. Step 3: Cross multiply
    149,631.75x = 206,496.79 × 81,652.45
  4. Step 4: Simplify right side
    149,631.75x = 16,860,968,820.64
  5. Step 5: Solve for x
    x = 16,860,968,820.64/149,631.75
  6. Step 6: Final answer
    x = 112,683.10

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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.