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Finding the Fourth Proportional to 149,642.88, 206,550.36 and 88,445.76

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Solution

The fourth proportional to 149,642.88, 206,550.36 and 88,445.76 is: 122,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,642.88 : 206,550.36 = 88,445.76 : x
  2. Step 2: Convert to fraction form
    149,642.88/206,550.36 = 88,445.76/x
  3. Step 3: Cross multiply
    149,642.88x = 206,550.36 × 88,445.76
  4. Step 4: Simplify right side
    149,642.88x = 18,268,503,568.47
  5. Step 5: Solve for x
    x = 18,268,503,568.47/149,642.88
  6. Step 6: Final answer
    x = 122,080.67

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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.