Home / 145,132.13-200,282.84-80,601.54

Finding the Fourth Proportional to 145,132.13, 200,282.84 and 80,601.54

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Solution

The fourth proportional to 145,132.13, 200,282.84 and 80,601.54 is: 111,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,132.13 : 200,282.84 = 80,601.54 : x
  2. Step 2: Convert to fraction form
    145,132.13/200,282.84 = 80,601.54/x
  3. Step 3: Cross multiply
    145,132.13x = 200,282.84 × 80,601.54
  4. Step 4: Simplify right side
    145,132.13x = 16,143,104,185.51
  5. Step 5: Solve for x
    x = 16,143,104,185.51/145,132.13
  6. Step 6: Final answer
    x = 111,230.39

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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.