Home / 208,519,811.70-287,738,322.01-123,732,321.15

Finding the Fourth Proportional to 208,519,811.70, 287,738,322.01 and 123,732,321.15

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Solution

The fourth proportional to 208,519,811.70, 287,738,322.01 and 123,732,321.15 is: 170,739,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,519,811.70 : 287,738,322.01 = 123,732,321.15 : x
  2. Step 2: Convert to fraction form
    208,519,811.70/287,738,322.01 = 123,732,321.15/x
  3. Step 3: Cross multiply
    208,519,811.70x = 287,738,322.01 × 123,732,321.15
  4. Step 4: Simplify right side
    208,519,811.70x = 35,602,530,467,569,736
  5. Step 5: Solve for x
    x = 35,602,530,467,569,736/208,519,811.70
  6. Step 6: Final answer
    x = 170,739,318.14

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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.