Home / 190,307.88-262,621.26-105,425.64

Finding the Fourth Proportional to 190,307.88, 262,621.26 and 105,425.64

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Solution

The fourth proportional to 190,307.88, 262,621.26 and 105,425.64 is: 145,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,307.88 : 262,621.26 = 105,425.64 : x
  2. Step 2: Convert to fraction form
    190,307.88/262,621.26 = 105,425.64/x
  3. Step 3: Cross multiply
    190,307.88x = 262,621.26 × 105,425.64
  4. Step 4: Simplify right side
    190,307.88x = 27,687,014,413.11
  5. Step 5: Solve for x
    x = 27,687,014,413.11/190,307.88
  6. Step 6: Final answer
    x = 145,485.38

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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.