Finding the Fourth Proportional to 118,426,639.24, 163,378,718.58 and 79,281,028.09
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Solution
The fourth proportional to 118,426,639.24, 163,378,718.58 and 79,281,028.09 is: 109,374,316.96
Step by Step Solution
- Step 1: Write the proportion equation
118,426,639.24 : 163,378,718.58 = 79,281,028.09 : x - Step 2: Convert to fraction form
118,426,639.24/163,378,718.58 = 79,281,028.09/x - Step 3: Cross multiply
118,426,639.24x = 163,378,718.58 × 79,281,028.09 - Step 4: Simplify right side
118,426,639.24x = 12,952,832,777,049,186 - Step 5: Solve for x
x = 12,952,832,777,049,186/118,426,639.24 - Step 6: Final answer
x = 109,374,316.96
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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.