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Finding the Fourth Proportional to 150,054.30, 207,100.44 and 86,428.98

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Solution

The fourth proportional to 150,054.30, 207,100.44 and 86,428.98 is: 119,286.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,054.30 : 207,100.44 = 86,428.98 : x
  2. Step 2: Convert to fraction form
    150,054.30/207,100.44 = 86,428.98/x
  3. Step 3: Cross multiply
    150,054.30x = 207,100.44 × 86,428.98
  4. Step 4: Simplify right side
    150,054.30x = 17,899,479,786.75
  5. Step 5: Solve for x
    x = 17,899,479,786.75/150,054.30
  6. Step 6: Final answer
    x = 119,286.68

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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.