Home / 190,407.75-262,762.70-105,530.28

Finding the Fourth Proportional to 190,407.75, 262,762.70 and 105,530.28

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Solution

The fourth proportional to 190,407.75, 262,762.70 and 105,530.28 is: 145,631.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,407.75 : 262,762.70 = 105,530.28 : x
  2. Step 2: Convert to fraction form
    190,407.75/262,762.70 = 105,530.28/x
  3. Step 3: Cross multiply
    190,407.75x = 262,762.70 × 105,530.28
  4. Step 4: Simplify right side
    190,407.75x = 27,729,420,776.90
  5. Step 5: Solve for x
    x = 27,729,420,776.90/190,407.75
  6. Step 6: Final answer
    x = 145,631.79

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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.