Finding the Fourth Proportional to 128,455,064.40, 177,268,163.88 and 69,717,730.26
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Solution
The fourth proportional to 128,455,064.40, 177,268,163.88 and 69,717,730.26 is: 96,210,562.74
Step by Step Solution
- Step 1: Write the proportion equation
128,455,064.40 : 177,268,163.88 = 69,717,730.26 : x - Step 2: Convert to fraction form
128,455,064.40/177,268,163.88 = 69,717,730.26/x - Step 3: Cross multiply
128,455,064.40x = 177,268,163.88 × 69,717,730.26 - Step 4: Simplify right side
128,455,064.40x = 12,358,734,033,071,316 - Step 5: Solve for x
x = 12,358,734,033,071,316/128,455,064.40 - Step 6: Final answer
x = 96,210,562.74
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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.