Home / 149,430.09-206,211.71-81,446.85

Finding the Fourth Proportional to 149,430.09, 206,211.71 and 81,446.85

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Solution

The fourth proportional to 149,430.09, 206,211.71 and 81,446.85 is: 112,395.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,430.09 : 206,211.71 = 81,446.85 : x
  2. Step 2: Convert to fraction form
    149,430.09/206,211.71 = 81,446.85/x
  3. Step 3: Cross multiply
    149,430.09x = 206,211.71 × 81,446.85
  4. Step 4: Simplify right side
    149,430.09x = 16,795,293,805.38
  5. Step 5: Solve for x
    x = 16,795,293,805.38/149,430.09
  6. Step 6: Final answer
    x = 112,395.66

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1.5x scale

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.