Home / 128,216.19-192,304.85-45,090.75

Finding the Fourth Proportional to 128,216.19, 192,304.85 and 45,090.75

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Solution

The fourth proportional to 128,216.19, 192,304.85 and 45,090.75 is: 67,629.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,216.19 : 192,304.85 = 45,090.75 : x
  2. Step 2: Convert to fraction form
    128,216.19/192,304.85 = 45,090.75/x
  3. Step 3: Cross multiply
    128,216.19x = 192,304.85 × 45,090.75
  4. Step 4: Simplify right side
    128,216.19x = 8,671,169,689.68
  5. Step 5: Solve for x
    x = 8,671,169,689.68/128,216.19
  6. Step 6: Final answer
    x = 67,629.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.