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Finding the Fourth Proportional to 139,110.09, 208,542.02 and 67,026.57

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Solution

The fourth proportional to 139,110.09, 208,542.02 and 67,026.57 is: 100,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,110.09 : 208,542.02 = 67,026.57 : x
  2. Step 2: Convert to fraction form
    139,110.09/208,542.02 = 67,026.57/x
  3. Step 3: Cross multiply
    139,110.09x = 208,542.02 × 67,026.57
  4. Step 4: Simplify right side
    139,110.09x = 13,977,855,966.34
  5. Step 5: Solve for x
    x = 13,977,855,966.34/139,110.09
  6. Step 6: Final answer
    x = 100,480.53

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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.