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Finding the Fourth Proportional to 139,566.84, 209,419.52 and 55,325.22

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Solution

The fourth proportional to 139,566.84, 209,419.52 and 55,325.22 is: 83,015.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,566.84 : 209,419.52 = 55,325.22 : x
  2. Step 2: Convert to fraction form
    139,566.84/209,419.52 = 55,325.22/x
  3. Step 3: Cross multiply
    139,566.84x = 209,419.52 × 55,325.22
  4. Step 4: Simplify right side
    139,566.84x = 11,586,180,739.67
  5. Step 5: Solve for x
    x = 11,586,180,739.67/139,566.84
  6. Step 6: Final answer
    x = 83,015.28

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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.