Home / 105,856.20-158,846.40-42,706.80

Finding the Fourth Proportional to 105,856.20, 158,846.40 and 42,706.80

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Solution

The fourth proportional to 105,856.20, 158,846.40 and 42,706.80 is: 64,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,856.20 : 158,846.40 = 42,706.80 : x
  2. Step 2: Convert to fraction form
    105,856.20/158,846.40 = 42,706.80/x
  3. Step 3: Cross multiply
    105,856.20x = 158,846.40 × 42,706.80
  4. Step 4: Simplify right side
    105,856.20x = 6,783,821,435.52
  5. Step 5: Solve for x
    x = 6,783,821,435.52/105,856.20
  6. Step 6: Final answer
    x = 64,085.25

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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.