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Finding the Fourth Proportional to 139,013.17, 208,394.91 and 67,895.57

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Solution

The fourth proportional to 139,013.17, 208,394.91 and 67,895.57 is: 101,782.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,013.17 : 208,394.91 = 67,895.57 : x
  2. Step 2: Convert to fraction form
    139,013.17/208,394.91 = 67,895.57/x
  3. Step 3: Cross multiply
    139,013.17x = 208,394.91 × 67,895.57
  4. Step 4: Simplify right side
    139,013.17x = 14,149,091,720.54
  5. Step 5: Solve for x
    x = 14,149,091,720.54/139,013.17
  6. Step 6: Final answer
    x = 101,782.38

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1.5x scale

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.