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Finding the Fourth Proportional to 147,155, 203,073.90 and 80,087.48

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Solution

The fourth proportional to 147,155, 203,073.90 and 80,087.48 is: 110,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,155 : 203,073.90 = 80,087.48 : x
  2. Step 2: Convert to fraction form
    147,155/203,073.90 = 80,087.48/x
  3. Step 3: Cross multiply
    147,155x = 203,073.90 × 80,087.48
  4. Step 4: Simplify right side
    147,155x = 16,263,676,904.77
  5. Step 5: Solve for x
    x = 16,263,676,904.77/147,155
  6. Step 6: Final answer
    x = 110,520.72

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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.