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Finding the Fourth Proportional to 139,166.53, 208,763.46 and 39,327.49

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Solution

The fourth proportional to 139,166.53, 208,763.46 and 39,327.49 is: 58,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,166.53 : 208,763.46 = 39,327.49 : x
  2. Step 2: Convert to fraction form
    139,166.53/208,763.46 = 39,327.49/x
  3. Step 3: Cross multiply
    139,166.53x = 208,763.46 × 39,327.49
  4. Step 4: Simplify right side
    139,166.53x = 8,210,142,885.52
  5. Step 5: Solve for x
    x = 8,210,142,885.52/139,166.53
  6. Step 6: Final answer
    x = 58,995.10

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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.