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Finding the Fourth Proportional to 221,082.04, 305,006.61 and 136,051.48

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Solution

The fourth proportional to 221,082.04, 305,006.61 and 136,051.48 is: 187,697.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,082.04 : 305,006.61 = 136,051.48 : x
  2. Step 2: Convert to fraction form
    221,082.04/305,006.61 = 136,051.48/x
  3. Step 3: Cross multiply
    221,082.04x = 305,006.61 × 136,051.48
  4. Step 4: Simplify right side
    221,082.04x = 41,496,600,700.28
  5. Step 5: Solve for x
    x = 41,496,600,700.28/221,082.04
  6. Step 6: Final answer
    x = 187,697.75

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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.