Home / 145,243.08-200,431.09-80,712.10

Finding the Fourth Proportional to 145,243.08, 200,431.09 and 80,712.10

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Solution

The fourth proportional to 145,243.08, 200,431.09 and 80,712.10 is: 111,380.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,243.08 : 200,431.09 = 80,712.10 : x
  2. Step 2: Convert to fraction form
    145,243.08/200,431.09 = 80,712.10/x
  3. Step 3: Cross multiply
    145,243.08x = 200,431.09 × 80,712.10
  4. Step 4: Simplify right side
    145,243.08x = 16,177,213,775.63
  5. Step 5: Solve for x
    x = 16,177,213,775.63/145,243.08
  6. Step 6: Final answer
    x = 111,380.27

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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.