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Finding the Fourth Proportional to 139,041.02, 208,600.72 and 39,202.11

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Solution

The fourth proportional to 139,041.02, 208,600.72 and 39,202.11 is: 58,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,041.02 : 208,600.72 = 39,202.11 : x
  2. Step 2: Convert to fraction form
    139,041.02/208,600.72 = 39,202.11/x
  3. Step 3: Cross multiply
    139,041.02x = 208,600.72 × 39,202.11
  4. Step 4: Simplify right side
    139,041.02x = 8,177,588,273.51
  5. Step 5: Solve for x
    x = 8,177,588,273.51/139,041.02
  6. Step 6: Final answer
    x = 58,814.21

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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.