Home / 105,629.32-145,782.30-68,012.92

Finding the Fourth Proportional to 105,629.32, 145,782.30 and 68,012.92

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Solution

The fourth proportional to 105,629.32, 145,782.30 and 68,012.92 is: 93,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,629.32 : 145,782.30 = 68,012.92 : x
  2. Step 2: Convert to fraction form
    105,629.32/145,782.30 = 68,012.92/x
  3. Step 3: Cross multiply
    105,629.32x = 145,782.30 × 68,012.92
  4. Step 4: Simplify right side
    105,629.32x = 9,915,079,907.32
  5. Step 5: Solve for x
    x = 9,915,079,907.32/105,629.32
  6. Step 6: Final answer
    x = 93,866.74

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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.