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Finding the Fourth Proportional to 139,571.04, 209,325.12 and 39,729.03

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Solution

The fourth proportional to 139,571.04, 209,325.12 and 39,729.03 is: 59,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,571.04 : 209,325.12 = 39,729.03 : x
  2. Step 2: Convert to fraction form
    139,571.04/209,325.12 = 39,729.03/x
  3. Step 3: Cross multiply
    139,571.04x = 209,325.12 × 39,729.03
  4. Step 4: Simplify right side
    139,571.04x = 8,316,283,972.23
  5. Step 5: Solve for x
    x = 8,316,283,972.23/139,571.04
  6. Step 6: Final answer
    x = 59,584.60

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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.