Home / 145,171.64-200,330.08-80,645.06

Finding the Fourth Proportional to 145,171.64, 200,330.08 and 80,645.06

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Solution

The fourth proportional to 145,171.64, 200,330.08 and 80,645.06 is: 111,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,171.64 : 200,330.08 = 80,645.06 : x
  2. Step 2: Convert to fraction form
    145,171.64/200,330.08 = 80,645.06/x
  3. Step 3: Cross multiply
    145,171.64x = 200,330.08 × 80,645.06
  4. Step 4: Simplify right side
    145,171.64x = 16,155,631,620.62
  5. Step 5: Solve for x
    x = 16,155,631,620.62/145,171.64
  6. Step 6: Final answer
    x = 111,286.41

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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.