Home / 221,109.03-305,111.16-122,973.48

Finding the Fourth Proportional to 221,109.03, 305,111.16 and 122,973.48

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Solution

The fourth proportional to 221,109.03, 305,111.16 and 122,973.48 is: 169,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,109.03 : 305,111.16 = 122,973.48 : x
  2. Step 2: Convert to fraction form
    221,109.03/305,111.16 = 122,973.48/x
  3. Step 3: Cross multiply
    221,109.03x = 305,111.16 × 122,973.48
  4. Step 4: Simplify right side
    221,109.03x = 37,520,581,132.04
  5. Step 5: Solve for x
    x = 37,520,581,132.04/221,109.03
  6. Step 6: Final answer
    x = 169,692.67

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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.