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Finding the Fourth Proportional to 147,121, 203,030.22 and 80,053

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Solution

The fourth proportional to 147,121, 203,030.22 and 80,053 is: 110,474.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,121 : 203,030.22 = 80,053 : x
  2. Step 2: Convert to fraction form
    147,121/203,030.22 = 80,053/x
  3. Step 3: Cross multiply
    147,121x = 203,030.22 × 80,053
  4. Step 4: Simplify right side
    147,121x = 16,253,178,201.66
  5. Step 5: Solve for x
    x = 16,253,178,201.66/147,121
  6. Step 6: Final answer
    x = 110,474.90

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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.