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Finding the Fourth Proportional to 139,879.07, 210,001.52 and 83,056.73

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Solution

The fourth proportional to 139,879.07, 210,001.52 and 83,056.73 is: 124,693.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,879.07 : 210,001.52 = 83,056.73 : x
  2. Step 2: Convert to fraction form
    139,879.07/210,001.52 = 83,056.73/x
  3. Step 3: Cross multiply
    139,879.07x = 210,001.52 × 83,056.73
  4. Step 4: Simplify right side
    139,879.07x = 17,442,039,546.23
  5. Step 5: Solve for x
    x = 17,442,039,546.23/139,879.07
  6. Step 6: Final answer
    x = 124,693.71

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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.