Home / 190,315.09-262,631.32-105,430.33

Finding the Fourth Proportional to 190,315.09, 262,631.32 and 105,430.33

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Solution

The fourth proportional to 190,315.09, 262,631.32 and 105,430.33 is: 145,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,315.09 : 262,631.32 = 105,430.33 : x
  2. Step 2: Convert to fraction form
    190,315.09/262,631.32 = 105,430.33/x
  3. Step 3: Cross multiply
    190,315.09x = 262,631.32 × 105,430.33
  4. Step 4: Simplify right side
    190,315.09x = 27,689,306,735.94
  5. Step 5: Solve for x
    x = 27,689,306,735.94/190,315.09
  6. Step 6: Final answer
    x = 145,491.91

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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.