Home / 154,039.80-212,720.37-145,652.94

Finding the Fourth Proportional to 154,039.80, 212,720.37 and 145,652.94

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Solution

The fourth proportional to 154,039.80, 212,720.37 and 145,652.94 is: 201,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,039.80 : 212,720.37 = 145,652.94 : x
  2. Step 2: Convert to fraction form
    154,039.80/212,720.37 = 145,652.94/x
  3. Step 3: Cross multiply
    154,039.80x = 212,720.37 × 145,652.94
  4. Step 4: Simplify right side
    154,039.80x = 30,983,347,288.39
  5. Step 5: Solve for x
    x = 30,983,347,288.39/154,039.80
  6. Step 6: Final answer
    x = 201,138.58

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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.