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Finding the Fourth Proportional to 139,898.58, 209,827.43 and 68,802.14

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Solution

The fourth proportional to 139,898.58, 209,827.43 and 68,802.14 is: 103,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,898.58 : 209,827.43 = 68,802.14 : x
  2. Step 2: Convert to fraction form
    139,898.58/209,827.43 = 68,802.14/x
  3. Step 3: Cross multiply
    139,898.58x = 209,827.43 × 68,802.14
  4. Step 4: Simplify right side
    139,898.58x = 14,436,575,079.56
  5. Step 5: Solve for x
    x = 14,436,575,079.56/139,898.58
  6. Step 6: Final answer
    x = 103,193.15

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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.