Finding the Fourth Proportional to 128,455,087.18, 177,268,195.86 and 69,717,753.20
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Solution
The fourth proportional to 128,455,087.18, 177,268,195.86 and 69,717,753.20 is: 96,210,594.69
Step by Step Solution
- Step 1: Write the proportion equation
128,455,087.18 : 177,268,195.86 = 69,717,753.20 : x - Step 2: Convert to fraction form
128,455,087.18/177,268,195.86 = 69,717,753.20/x - Step 3: Cross multiply
128,455,087.18x = 177,268,195.86 × 69,717,753.20 - Step 4: Simplify right side
128,455,087.18x = 12,358,740,329,176,744 - Step 5: Solve for x
x = 12,358,740,329,176,744/128,455,087.18 - Step 6: Final answer
x = 96,210,594.69
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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.