Finding the Fourth Proportional to 128,633,537.34, 177,515,402.49 and 69,896,203.47
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Solution
The fourth proportional to 128,633,537.34, 177,515,402.49 and 69,896,203.47 is: 96,457,369.89
Step by Step Solution
- Step 1: Write the proportion equation
128,633,537.34 : 177,515,402.49 = 69,896,203.47 : x - Step 2: Convert to fraction form
128,633,537.34/177,515,402.49 = 69,896,203.47/x - Step 3: Cross multiply
128,633,537.34x = 177,515,402.49 × 69,896,203.47 - Step 4: Simplify right side
128,633,537.34x = 12,407,652,691,499,986 - Step 5: Solve for x
x = 12,407,652,691,499,986/128,633,537.34 - Step 6: Final answer
x = 96,457,369.89
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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.