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Finding the Fourth Proportional to 139,435.25, 209,110.95 and 39,603.56

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Solution

The fourth proportional to 139,435.25, 209,110.95 and 39,603.56 is: 59,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,435.25 : 209,110.95 = 39,603.56 : x
  2. Step 2: Convert to fraction form
    139,435.25/209,110.95 = 39,603.56/x
  3. Step 3: Cross multiply
    139,435.25x = 209,110.95 × 39,603.56
  4. Step 4: Simplify right side
    139,435.25x = 8,281,537,009.43
  5. Step 5: Solve for x
    x = 8,281,537,009.43/139,435.25
  6. Step 6: Final answer
    x = 59,393.43

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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.