Home / 145,147.66-200,303.62-81,485.58

Finding the Fourth Proportional to 145,147.66, 200,303.62 and 81,485.58

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Solution

The fourth proportional to 145,147.66, 200,303.62 and 81,485.58 is: 112,450.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,147.66 : 200,303.62 = 81,485.58 : x
  2. Step 2: Convert to fraction form
    145,147.66/200,303.62 = 81,485.58/x
  3. Step 3: Cross multiply
    145,147.66x = 200,303.62 × 81,485.58
  4. Step 4: Simplify right side
    145,147.66x = 16,321,856,651.80
  5. Step 5: Solve for x
    x = 16,321,856,651.80/145,147.66
  6. Step 6: Final answer
    x = 112,450.02

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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.