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Finding the Fourth Proportional to 139,370.09, 209,055.99 and 34,188.98

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Solution

The fourth proportional to 139,370.09, 209,055.99 and 34,188.98 is: 51,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,370.09 : 209,055.99 = 34,188.98 : x
  2. Step 2: Convert to fraction form
    139,370.09/209,055.99 = 34,188.98/x
  3. Step 3: Cross multiply
    139,370.09x = 209,055.99 × 34,188.98
  4. Step 4: Simplify right side
    139,370.09x = 7,147,411,060.99
  5. Step 5: Solve for x
    x = 7,147,411,060.99/139,370.09
  6. Step 6: Final answer
    x = 51,283.68

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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.