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Finding the Fourth Proportional to 139,797.16, 209,702.66 and 39,972.04

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Solution

The fourth proportional to 139,797.16, 209,702.66 and 39,972.04 is: 59,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,797.16 : 209,702.66 = 39,972.04 : x
  2. Step 2: Convert to fraction form
    139,797.16/209,702.66 = 39,972.04/x
  3. Step 3: Cross multiply
    139,797.16x = 209,702.66 × 39,972.04
  4. Step 4: Simplify right side
    139,797.16x = 8,382,243,113.63
  5. Step 5: Solve for x
    x = 8,382,243,113.63/139,797.16
  6. Step 6: Final answer
    x = 59,960.04

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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.