Finding the Fourth Proportional to 128,385,359.22, 177,156,848.70 and 71,873,199.66
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Solution
The fourth proportional to 128,385,359.22, 177,156,848.70 and 71,873,199.66 is: 99,176,647.83
Step by Step Solution
- Step 1: Write the proportion equation
128,385,359.22 : 177,156,848.70 = 71,873,199.66 : x - Step 2: Convert to fraction form
128,385,359.22/177,156,848.70 = 71,873,199.66/x - Step 3: Cross multiply
128,385,359.22x = 177,156,848.70 × 71,873,199.66 - Step 4: Simplify right side
128,385,359.22x = 12,732,829,557,751,510 - Step 5: Solve for x
x = 12,732,829,557,751,510/128,385,359.22 - Step 6: Final answer
x = 99,176,647.83
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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.