Finding the Fourth Proportional to 103,136,843.89, 142,331,536.70 and 56,728,315.63
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Solution
The fourth proportional to 103,136,843.89, 142,331,536.70 and 56,728,315.63 is: 78,286,556.32
Step by Step Solution
- Step 1: Write the proportion equation
103,136,843.89 : 142,331,536.70 = 56,728,315.63 : x - Step 2: Convert to fraction form
103,136,843.89/142,331,536.70 = 56,728,315.63/x - Step 3: Cross multiply
103,136,843.89x = 142,331,536.70 × 56,728,315.63 - Step 4: Simplify right side
103,136,843.89x = 8,074,228,337,736,887 - Step 5: Solve for x
x = 8,074,228,337,736,887/103,136,843.89 - Step 6: Final answer
x = 78,286,556.32
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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.