Home / 190,330.56-262,643.04-105,439.68

Finding the Fourth Proportional to 190,330.56, 262,643.04 and 105,439.68

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Solution

The fourth proportional to 190,330.56, 262,643.04 and 105,439.68 is: 145,499.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,330.56 : 262,643.04 = 105,439.68 : x
  2. Step 2: Convert to fraction form
    190,330.56/262,643.04 = 105,439.68/x
  3. Step 3: Cross multiply
    190,330.56x = 262,643.04 × 105,439.68
  4. Step 4: Simplify right side
    190,330.56x = 27,692,998,091.83
  5. Step 5: Solve for x
    x = 27,692,998,091.83/190,330.56
  6. Step 6: Final answer
    x = 145,499.48

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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.