Home / 136,723.20-205,084.80-109,075.20

Finding the Fourth Proportional to 136,723.20, 205,084.80 and 109,075.20

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Solution

The fourth proportional to 136,723.20, 205,084.80 and 109,075.20 is: 163,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,723.20 : 205,084.80 = 109,075.20 : x
  2. Step 2: Convert to fraction form
    136,723.20/205,084.80 = 109,075.20/x
  3. Step 3: Cross multiply
    136,723.20x = 205,084.80 × 109,075.20
  4. Step 4: Simplify right side
    136,723.20x = 22,369,665,576.96
  5. Step 5: Solve for x
    x = 22,369,665,576.96/136,723.20
  6. Step 6: Final answer
    x = 163,612.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.