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Finding the Fourth Proportional to 139,000.88, 208,503.14 and 45,506.63

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Solution

The fourth proportional to 139,000.88, 208,503.14 and 45,506.63 is: 68,260.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,000.88 : 208,503.14 = 45,506.63 : x
  2. Step 2: Convert to fraction form
    139,000.88/208,503.14 = 45,506.63/x
  3. Step 3: Cross multiply
    139,000.88x = 208,503.14 × 45,506.63
  4. Step 4: Simplify right side
    139,000.88x = 9,488,273,975.77
  5. Step 5: Solve for x
    x = 9,488,273,975.77/139,000.88
  6. Step 6: Final answer
    x = 68,260.53

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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.