Home / 149,429.42-206,211.29-81,446.40

Finding the Fourth Proportional to 149,429.42, 206,211.29 and 81,446.40

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Solution

The fourth proportional to 149,429.42, 206,211.29 and 81,446.40 is: 112,395.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,429.42 : 206,211.29 = 81,446.40 : x
  2. Step 2: Convert to fraction form
    149,429.42/206,211.29 = 81,446.40/x
  3. Step 3: Cross multiply
    149,429.42x = 206,211.29 × 81,446.40
  4. Step 4: Simplify right side
    149,429.42x = 16,795,167,413.47
  5. Step 5: Solve for x
    x = 16,795,167,413.47/149,429.42
  6. Step 6: Final answer
    x = 112,395.32

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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.