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Finding the Fourth Proportional to 140,135.67, 210,028.55 and 70,035.03

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Solution

The fourth proportional to 140,135.67, 210,028.55 and 70,035.03 is: 104,965.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,135.67 : 210,028.55 = 70,035.03 : x
  2. Step 2: Convert to fraction form
    140,135.67/210,028.55 = 70,035.03/x
  3. Step 3: Cross multiply
    140,135.67x = 210,028.55 × 70,035.03
  4. Step 4: Simplify right side
    140,135.67x = 14,709,355,449.93
  5. Step 5: Solve for x
    x = 14,709,355,449.93/140,135.67
  6. Step 6: Final answer
    x = 104,965.11

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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.