Home / 128,036.12-192,303.14-104,361.03

Finding the Fourth Proportional to 128,036.12, 192,303.14 and 104,361.03

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Solution

The fourth proportional to 128,036.12, 192,303.14 and 104,361.03 is: 156,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036.12 : 192,303.14 = 104,361.03 : x
  2. Step 2: Convert to fraction form
    128,036.12/192,303.14 = 104,361.03/x
  3. Step 3: Cross multiply
    128,036.12x = 192,303.14 × 104,361.03
  4. Step 4: Simplify right side
    128,036.12x = 20,068,953,240.83
  5. Step 5: Solve for x
    x = 20,068,953,240.83/128,036.12
  6. Step 6: Final answer
    x = 156,744.47

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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.