Finding the Fourth Proportional to 128,455,083.18, 177,268,190.33 and 69,717,749.21
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Solution
The fourth proportional to 128,455,083.18, 177,268,190.33 and 69,717,749.21 is: 96,210,589.18
Step by Step Solution
- Step 1: Write the proportion equation
128,455,083.18 : 177,268,190.33 = 69,717,749.21 : x - Step 2: Convert to fraction form
128,455,083.18/177,268,190.33 = 69,717,749.21/x - Step 3: Cross multiply
128,455,083.18x = 177,268,190.33 × 69,717,749.21 - Step 4: Simplify right side
128,455,083.18x = 12,358,739,235,625,440 - Step 5: Solve for x
x = 12,358,739,235,625,440/128,455,083.18 - Step 6: Final answer
x = 96,210,589.18
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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.