Finding the Fourth Proportional to 144,293,212.12, 199,119,296.09 and 78,212,291.59
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Solution
The fourth proportional to 144,293,212.12, 199,119,296.09 and 78,212,291.59 is: 107,930,069.74
Step by Step Solution
- Step 1: Write the proportion equation
144,293,212.12 : 199,119,296.09 = 78,212,291.59 : x - Step 2: Convert to fraction form
144,293,212.12/199,119,296.09 = 78,212,291.59/x - Step 3: Cross multiply
144,293,212.12x = 199,119,296.09 × 78,212,291.59 - Step 4: Simplify right side
144,293,212.12x = 15,573,576,446,684,360 - Step 5: Solve for x
x = 15,573,576,446,684,360/144,293,212.12 - Step 6: Final answer
x = 107,930,069.74
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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.