Home / 221,037.55-305,031.82-120,435.55

Finding the Fourth Proportional to 221,037.55, 305,031.82 and 120,435.55

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Solution

The fourth proportional to 221,037.55, 305,031.82 and 120,435.55 is: 166,201.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,037.55 : 305,031.82 = 120,435.55 : x
  2. Step 2: Convert to fraction form
    221,037.55/305,031.82 = 120,435.55/x
  3. Step 3: Cross multiply
    221,037.55x = 305,031.82 × 120,435.55
  4. Step 4: Simplify right side
    221,037.55x = 36,736,675,009.20
  5. Step 5: Solve for x
    x = 36,736,675,009.20/221,037.55
  6. Step 6: Final answer
    x = 166,201.06

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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.