Home / 105,943.68-158,915.45-39,400.56

Finding the Fourth Proportional to 105,943.68, 158,915.45 and 39,400.56

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Solution

The fourth proportional to 105,943.68, 158,915.45 and 39,400.56 is: 59,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,943.68 : 158,915.45 = 39,400.56 : x
  2. Step 2: Convert to fraction form
    105,943.68/158,915.45 = 39,400.56/x
  3. Step 3: Cross multiply
    105,943.68x = 158,915.45 × 39,400.56
  4. Step 4: Simplify right side
    105,943.68x = 6,261,357,821.15
  5. Step 5: Solve for x
    x = 6,261,357,821.15/105,943.68
  6. Step 6: Final answer
    x = 59,100.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.