Home / 149,780.23-206,698.35-81,799.20

Finding the Fourth Proportional to 149,780.23, 206,698.35 and 81,799.20

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Solution

The fourth proportional to 149,780.23, 206,698.35 and 81,799.20 is: 112,883.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,780.23 : 206,698.35 = 81,799.20 : x
  2. Step 2: Convert to fraction form
    149,780.23/206,698.35 = 81,799.20/x
  3. Step 3: Cross multiply
    149,780.23x = 206,698.35 × 81,799.20
  4. Step 4: Simplify right side
    149,780.23x = 16,907,759,978.07
  5. Step 5: Solve for x
    x = 16,907,759,978.07/149,780.23
  6. Step 6: Final answer
    x = 112,883.79

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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.