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Finding the Fourth Proportional to 139,975.92, 210,050.96 and 56,869.92

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Solution

The fourth proportional to 139,975.92, 210,050.96 and 56,869.92 is: 85,340.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,975.92 : 210,050.96 = 56,869.92 : x
  2. Step 2: Convert to fraction form
    139,975.92/210,050.96 = 56,869.92/x
  3. Step 3: Cross multiply
    139,975.92x = 210,050.96 × 56,869.92
  4. Step 4: Simplify right side
    139,975.92x = 11,945,581,816.25
  5. Step 5: Solve for x
    x = 11,945,581,816.25/139,975.92
  6. Step 6: Final answer
    x = 85,340.26

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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.