Finding the Fourth Proportional to 128,857,312,988.46, 177,828,603,338.78 and 71,764,614,330.08
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Solution
The fourth proportional to 128,857,312,988.46, 177,828,603,338.78 and 71,764,614,330.08 is: 99,038,237,252.44
Step by Step Solution
- Step 1: Write the proportion equation
128,857,312,988.46 : 177,828,603,338.78 = 71,764,614,330.08 : x - Step 2: Convert to fraction form
128,857,312,988.46/177,828,603,338.78 = 71,764,614,330.08/x - Step 3: Cross multiply
128,857,312,988.46x = 177,828,603,338.78 × 71,764,614,330.08 - Step 4: Simplify right side
128,857,312,988.46x = 12,761,801,135,463,434,551,296 - Step 5: Solve for x
x = 12,761,801,135,463,434,551,296/128,857,312,988.46 - Step 6: Final answer
x = 99,038,237,252.44
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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.