Home / 149,531.67-206,385.72-85,904.55

Finding the Fourth Proportional to 149,531.67, 206,385.72 and 85,904.55

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Solution

The fourth proportional to 149,531.67, 206,385.72 and 85,904.55 is: 118,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,531.67 : 206,385.72 = 85,904.55 : x
  2. Step 2: Convert to fraction form
    149,531.67/206,385.72 = 85,904.55/x
  3. Step 3: Cross multiply
    149,531.67x = 206,385.72 × 85,904.55
  4. Step 4: Simplify right side
    149,531.67x = 17,729,472,403.03
  5. Step 5: Solve for x
    x = 17,729,472,403.03/149,531.67
  6. Step 6: Final answer
    x = 118,566.67

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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.