Home / 208,052,989.29-287,117,764.56-118,743,142.12

Finding the Fourth Proportional to 208,052,989.29, 287,117,764.56 and 118,743,142.12

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Solution

The fourth proportional to 208,052,989.29, 287,117,764.56 and 118,743,142.12 is: 163,868,183.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,052,989.29 : 287,117,764.56 = 118,743,142.12 : x
  2. Step 2: Convert to fraction form
    208,052,989.29/287,117,764.56 = 118,743,142.12/x
  3. Step 3: Cross multiply
    208,052,989.29x = 287,117,764.56 × 118,743,142.12
  4. Step 4: Simplify right side
    208,052,989.29x = 34,093,265,522,324,780
  5. Step 5: Solve for x
    x = 34,093,265,522,324,780/208,052,989.29
  6. Step 6: Final answer
    x = 163,868,183.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.