Finding the Fourth Proportional to 128,884,727.64, 177,855,666.42 and 73,128,948.03
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Solution
The fourth proportional to 128,884,727.64, 177,855,666.42 and 73,128,948.03 is: 100,914,965.07
Step by Step Solution
- Step 1: Write the proportion equation
128,884,727.64 : 177,855,666.42 = 73,128,948.03 : x - Step 2: Convert to fraction form
128,884,727.64/177,855,666.42 = 73,128,948.03/x - Step 3: Cross multiply
128,884,727.64x = 177,855,666.42 × 73,128,948.03 - Step 4: Simplify right side
128,884,727.64x = 13,006,397,787,044,864 - Step 5: Solve for x
x = 13,006,397,787,044,864/128,884,727.64 - Step 6: Final answer
x = 100,914,965.07
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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.