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Finding the Fourth Proportional to 100,028.01, 149,875.43 and 70,383.57

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Solution

The fourth proportional to 100,028.01, 149,875.43 and 70,383.57 is: 105,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,028.01 : 149,875.43 = 70,383.57 : x
  2. Step 2: Convert to fraction form
    100,028.01/149,875.43 = 70,383.57/x
  3. Step 3: Cross multiply
    100,028.01x = 149,875.43 × 70,383.57
  4. Step 4: Simplify right side
    100,028.01x = 10,548,766,904.73
  5. Step 5: Solve for x
    x = 10,548,766,904.73/100,028.01
  6. Step 6: Final answer
    x = 105,458.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.