Home / 190,172.47-262,455.61-105,289.53

Finding the Fourth Proportional to 190,172.47, 262,455.61 and 105,289.53

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Solution

The fourth proportional to 190,172.47, 262,455.61 and 105,289.53 is: 145,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,172.47 : 262,455.61 = 105,289.53 : x
  2. Step 2: Convert to fraction form
    190,172.47/262,455.61 = 105,289.53/x
  3. Step 3: Cross multiply
    190,172.47x = 262,455.61 × 105,289.53
  4. Step 4: Simplify right side
    190,172.47x = 27,633,826,993.76
  5. Step 5: Solve for x
    x = 27,633,826,993.76/190,172.47
  6. Step 6: Final answer
    x = 145,309.30

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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.