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Finding the Fourth Proportional to 139,187.23, 208,779.02 and 34,007.11

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Solution

The fourth proportional to 139,187.23, 208,779.02 and 34,007.11 is: 51,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,187.23 : 208,779.02 = 34,007.11 : x
  2. Step 2: Convert to fraction form
    139,187.23/208,779.02 = 34,007.11/x
  3. Step 3: Cross multiply
    139,187.23x = 208,779.02 × 34,007.11
  4. Step 4: Simplify right side
    139,187.23x = 7,099,970,406.85
  5. Step 5: Solve for x
    x = 7,099,970,406.85/139,187.23
  6. Step 6: Final answer
    x = 51,010.22

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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.