Finding the Fourth Proportional to 121,509,457.56, 167,642,003.61 and 79,103,708.12
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Solution
The fourth proportional to 121,509,457.56, 167,642,003.61 and 79,103,708.12 is: 109,136,394.72
Step by Step Solution
- Step 1: Write the proportion equation
121,509,457.56 : 167,642,003.61 = 79,103,708.12 : x - Step 2: Convert to fraction form
121,509,457.56/167,642,003.61 = 79,103,708.12/x - Step 3: Cross multiply
121,509,457.56x = 167,642,003.61 × 79,103,708.12 - Step 4: Simplify right side
121,509,457.56x = 13,261,104,122,228,726 - Step 5: Solve for x
x = 13,261,104,122,228,726/121,509,457.56 - Step 6: Final answer
x = 109,136,394.72
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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.