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Finding the Fourth Proportional to 136,704.63, 188,647.97 and 74,612.74

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Solution

The fourth proportional to 136,704.63, 188,647.97 and 74,612.74 is: 102,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,704.63 : 188,647.97 = 74,612.74 : x
  2. Step 2: Convert to fraction form
    136,704.63/188,647.97 = 74,612.74/x
  3. Step 3: Cross multiply
    136,704.63x = 188,647.97 × 74,612.74
  4. Step 4: Simplify right side
    136,704.63x = 14,075,542,359.48
  5. Step 5: Solve for x
    x = 14,075,542,359.48/136,704.63
  6. Step 6: Final answer
    x = 102,963.17

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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.