Home / 145,453.25-200,724.18-81,791.51

Finding the Fourth Proportional to 145,453.25, 200,724.18 and 81,791.51

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Solution

The fourth proportional to 145,453.25, 200,724.18 and 81,791.51 is: 112,871.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,453.25 : 200,724.18 = 81,791.51 : x
  2. Step 2: Convert to fraction form
    145,453.25/200,724.18 = 81,791.51/x
  3. Step 3: Cross multiply
    145,453.25x = 200,724.18 × 81,791.51
  4. Step 4: Simplify right side
    145,453.25x = 16,417,532,465.37
  5. Step 5: Solve for x
    x = 16,417,532,465.37/145,453.25
  6. Step 6: Final answer
    x = 112,871.54

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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.