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Finding the Fourth Proportional to 147,496.16, 203,544.84 and 80,428.16

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Solution

The fourth proportional to 147,496.16, 203,544.84 and 80,428.16 is: 110,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,496.16 : 203,544.84 = 80,428.16 : x
  2. Step 2: Convert to fraction form
    147,496.16/203,544.84 = 80,428.16/x
  3. Step 3: Cross multiply
    147,496.16x = 203,544.84 × 80,428.16
  4. Step 4: Simplify right side
    147,496.16x = 16,370,736,958.69
  5. Step 5: Solve for x
    x = 16,370,736,958.69/147,496.16
  6. Step 6: Final answer
    x = 110,990.94

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1.5x scale

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.