Finding the Fourth Proportional to 128,455,031.66, 177,268,118.75 and 69,717,697.54
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Solution
The fourth proportional to 128,455,031.66, 177,268,118.75 and 69,717,697.54 is: 96,210,517.62
Step by Step Solution
- Step 1: Write the proportion equation
128,455,031.66 : 177,268,118.75 = 69,717,697.54 : x - Step 2: Convert to fraction form
128,455,031.66/177,268,118.75 = 69,717,697.54/x - Step 3: Cross multiply
128,455,031.66x = 177,268,118.75 × 69,717,697.54 - Step 4: Simplify right side
128,455,031.66x = 12,358,725,086,497,304 - Step 5: Solve for x
x = 12,358,725,086,497,304/128,455,031.66 - Step 6: Final answer
x = 96,210,517.62
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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.