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Finding the Fourth Proportional to 159,936,687.80, 239,993,555.99 and 78,056,244.33

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Solution

The fourth proportional to 159,936,687.80, 239,993,555.99 and 78,056,244.33 is: 117,127,570.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,936,687.80 : 239,993,555.99 = 78,056,244.33 : x
  2. Step 2: Convert to fraction form
    159,936,687.80/239,993,555.99 = 78,056,244.33/x
  3. Step 3: Cross multiply
    159,936,687.80x = 239,993,555.99 × 78,056,244.33
  4. Step 4: Simplify right side
    159,936,687.80x = 18,732,995,643,590,696
  5. Step 5: Solve for x
    x = 18,732,995,643,590,696/159,936,687.80
  6. Step 6: Final answer
    x = 117,127,570.30

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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.