Finding the Fourth Proportional to 129,104,013.51, 178,163,605.08 and 73,349,532.18
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Solution
The fourth proportional to 129,104,013.51, 178,163,605.08 and 73,349,532.18 is: 101,222,392.15
Step by Step Solution
- Step 1: Write the proportion equation
129,104,013.51 : 178,163,605.08 = 73,349,532.18 : x - Step 2: Convert to fraction form
129,104,013.51/178,163,605.08 = 73,349,532.18/x - Step 3: Cross multiply
129,104,013.51x = 178,163,605.08 × 73,349,532.18 - Step 4: Simplify right side
129,104,013.51x = 13,068,217,084,120,274 - Step 5: Solve for x
x = 13,068,217,084,120,274/129,104,013.51 - Step 6: Final answer
x = 101,222,392.15
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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.