Home / 139,985.21-209,946.72-40,144.97

Finding the Fourth Proportional to 139,985.21, 209,946.72 and 40,144.97

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Solution

The fourth proportional to 139,985.21, 209,946.72 and 40,144.97 is: 60,208.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,985.21 : 209,946.72 = 40,144.97 : x
  2. Step 2: Convert to fraction form
    139,985.21/209,946.72 = 40,144.97/x
  3. Step 3: Cross multiply
    139,985.21x = 209,946.72 × 40,144.97
  4. Step 4: Simplify right side
    139,985.21x = 8,428,304,776.00
  5. Step 5: Solve for x
    x = 8,428,304,776.00/139,985.21
  6. Step 6: Final answer
    x = 60,208.54

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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.