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Finding the Fourth Proportional to 147,811.59, 203,980.00 and 80,743.59

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Solution

The fourth proportional to 147,811.59, 203,980.00 and 80,743.59 is: 111,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,811.59 : 203,980.00 = 80,743.59 : x
  2. Step 2: Convert to fraction form
    147,811.59/203,980.00 = 80,743.59/x
  3. Step 3: Cross multiply
    147,811.59x = 203,980.00 × 80,743.59
  4. Step 4: Simplify right side
    147,811.59x = 16,470,078,202.66
  5. Step 5: Solve for x
    x = 16,470,078,202.66/147,811.59
  6. Step 6: Final answer
    x = 111,426.16

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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.