Finding the Fourth Proportional to 128,574,053.09, 177,433,631.11 and 75,662,458.53
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Solution
The fourth proportional to 128,574,053.09, 177,433,631.11 and 75,662,458.53 is: 104,415,038.90
Step by Step Solution
- Step 1: Write the proportion equation
128,574,053.09 : 177,433,631.11 = 75,662,458.53 : x - Step 2: Convert to fraction form
128,574,053.09/177,433,631.11 = 75,662,458.53/x - Step 3: Cross multiply
128,574,053.09x = 177,433,631.11 × 75,662,458.53 - Step 4: Simplify right side
128,574,053.09x = 13,425,064,754,691,674 - Step 5: Solve for x
x = 13,425,064,754,691,674/128,574,053.09 - Step 6: Final answer
x = 104,415,038.90
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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.