Home / 145,185.11-200,357.96-80,660.21

Finding the Fourth Proportional to 145,185.11, 200,357.96 and 80,660.21

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Solution

The fourth proportional to 145,185.11, 200,357.96 and 80,660.21 is: 111,312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185.11 : 200,357.96 = 80,660.21 : x
  2. Step 2: Convert to fraction form
    145,185.11/200,357.96 = 80,660.21/x
  3. Step 3: Cross multiply
    145,185.11x = 200,357.96 × 80,660.21
  4. Step 4: Simplify right side
    145,185.11x = 16,160,913,723.68
  5. Step 5: Solve for x
    x = 16,160,913,723.68/145,185.11
  6. Step 6: Final answer
    x = 111,312.47

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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.