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Finding the Fourth Proportional to 136,883.59, 188,888.56 and 76,449.49

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Solution

The fourth proportional to 136,883.59, 188,888.56 and 76,449.49 is: 105,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,883.59 : 188,888.56 = 76,449.49 : x
  2. Step 2: Convert to fraction form
    136,883.59/188,888.56 = 76,449.49/x
  3. Step 3: Cross multiply
    136,883.59x = 188,888.56 × 76,449.49
  4. Step 4: Simplify right side
    136,883.59x = 14,440,434,078.83
  5. Step 5: Solve for x
    x = 14,440,434,078.83/136,883.59
  6. Step 6: Final answer
    x = 105,494.27

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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.