Home / 105,621.20-158,140.20-82,293.20

Finding the Fourth Proportional to 105,621.20, 158,140.20 and 82,293.20

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Solution

The fourth proportional to 105,621.20, 158,140.20 and 82,293.20 is: 123,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,621.20 : 158,140.20 = 82,293.20 : x
  2. Step 2: Convert to fraction form
    105,621.20/158,140.20 = 82,293.20/x
  3. Step 3: Cross multiply
    105,621.20x = 158,140.20 × 82,293.20
  4. Step 4: Simplify right side
    105,621.20x = 13,013,863,106.64
  5. Step 5: Solve for x
    x = 13,013,863,106.64/105,621.20
  6. Step 6: Final answer
    x = 123,212.60

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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.