Finding the Fourth Proportional to 128,385,357.22, 177,156,845.94 and 71,873,197.66
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Solution
The fourth proportional to 128,385,357.22, 177,156,845.94 and 71,873,197.66 is: 99,176,645.07
Step by Step Solution
- Step 1: Write the proportion equation
128,385,357.22 : 177,156,845.94 = 71,873,197.66 : x - Step 2: Convert to fraction form
128,385,357.22/177,156,845.94 = 71,873,197.66/x - Step 3: Cross multiply
128,385,357.22x = 177,156,845.94 × 71,873,197.66 - Step 4: Simplify right side
128,385,357.22x = 12,732,829,005,067,788 - Step 5: Solve for x
x = 12,732,829,005,067,788/128,385,357.22 - Step 6: Final answer
x = 99,176,645.07
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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.