Home / 190,172.25-262,437.71-105,294.78

Finding the Fourth Proportional to 190,172.25, 262,437.71 and 105,294.78

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Solution

The fourth proportional to 190,172.25, 262,437.71 and 105,294.78 is: 145,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,172.25 : 262,437.71 = 105,294.78 : x
  2. Step 2: Convert to fraction form
    190,172.25/262,437.71 = 105,294.78/x
  3. Step 3: Cross multiply
    190,172.25x = 262,437.71 × 105,294.78
  4. Step 4: Simplify right side
    190,172.25x = 27,633,320,411.68
  5. Step 5: Solve for x
    x = 27,633,320,411.68/190,172.25
  6. Step 6: Final answer
    x = 145,306.80

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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.