Finding the Fourth Proportional to 128,864,289,502.38, 177,838,263,576.99 and 71,771,625,387.66
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Solution
The fourth proportional to 128,864,289,502.38, 177,838,263,576.99 and 71,771,625,387.66 is: 99,047,930,829.62
Step by Step Solution
- Step 1: Write the proportion equation
128,864,289,502.38 : 177,838,263,576.99 = 71,771,625,387.66 : x - Step 2: Convert to fraction form
128,864,289,502.38/177,838,263,576.99 = 71,771,625,387.66/x - Step 3: Cross multiply
128,864,289,502.38x = 177,838,263,576.99 × 71,771,625,387.66 - Step 4: Simplify right side
128,864,289,502.38x = 12,763,741,233,039,666,053,120 - Step 5: Solve for x
x = 12,763,741,233,039,666,053,120/128,864,289,502.38 - Step 6: Final answer
x = 99,047,930,829.62
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1.5x scale
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.