Finding the Fourth Proportional to 121,490,257.68, 167,656,447.28 and 68,578,102.71
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Solution
The fourth proportional to 121,490,257.68, 167,656,447.28 and 68,578,102.71 is: 94,637,720.60
Step by Step Solution
- Step 1: Write the proportion equation
121,490,257.68 : 167,656,447.28 = 68,578,102.71 : x - Step 2: Convert to fraction form
121,490,257.68/167,656,447.28 = 68,578,102.71/x - Step 3: Cross multiply
121,490,257.68x = 167,656,447.28 × 68,578,102.71 - Step 4: Simplify right side
121,490,257.68x = 11,497,561,061,732,984 - Step 5: Solve for x
x = 11,497,561,061,732,984/121,490,257.68 - Step 6: Final answer
x = 94,637,720.60
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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.