Finding the Fourth Proportional to 121,490,257.86, 167,656,447.49 and 68,578,102.88
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Solution
The fourth proportional to 121,490,257.86, 167,656,447.49 and 68,578,102.88 is: 94,637,720.81
Step by Step Solution
- Step 1: Write the proportion equation
121,490,257.86 : 167,656,447.49 = 68,578,102.88 : x - Step 2: Convert to fraction form
121,490,257.86/167,656,447.49 = 68,578,102.88/x - Step 3: Cross multiply
121,490,257.86x = 167,656,447.49 × 68,578,102.88 - Step 4: Simplify right side
121,490,257.86x = 11,497,561,103,912,078 - Step 5: Solve for x
x = 11,497,561,103,912,078/121,490,257.86 - Step 6: Final answer
x = 94,637,720.81
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.