Finding the Fourth Proportional to 128,382,988.60, 177,168,524.28 and 73,380,026.08
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Solution
The fourth proportional to 128,382,988.60, 177,168,524.28 and 73,380,026.08 is: 101,264,436.00
Step by Step Solution
- Step 1: Write the proportion equation
128,382,988.60 : 177,168,524.28 = 73,380,026.08 : x - Step 2: Convert to fraction form
128,382,988.60/177,168,524.28 = 73,380,026.08/x - Step 3: Cross multiply
128,382,988.60x = 177,168,524.28 × 73,380,026.08 - Step 4: Simplify right side
128,382,988.60x = 13,000,630,932,221,512 - Step 5: Solve for x
x = 13,000,630,932,221,512/128,382,988.60 - Step 6: Final answer
x = 101,264,436.00
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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.