Home / 221,118.72-305,105.54-130,467.84

Finding the Fourth Proportional to 221,118.72, 305,105.54 and 130,467.84

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Solution

The fourth proportional to 221,118.72, 305,105.54 and 130,467.84 is: 180,023.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,118.72 : 305,105.54 = 130,467.84 : x
  2. Step 2: Convert to fraction form
    221,118.72/305,105.54 = 130,467.84/x
  3. Step 3: Cross multiply
    221,118.72x = 305,105.54 × 130,467.84
  4. Step 4: Simplify right side
    221,118.72x = 39,806,460,123.49
  5. Step 5: Solve for x
    x = 39,806,460,123.49/221,118.72
  6. Step 6: Final answer
    x = 180,023.02

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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.