Finding the Fourth Proportional to 128,455,132.50, 177,268,258.20 and 69,717,798.36
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Solution
The fourth proportional to 128,455,132.50, 177,268,258.20 and 69,717,798.36 is: 96,210,656.91
Step by Step Solution
- Step 1: Write the proportion equation
128,455,132.50 : 177,268,258.20 = 69,717,798.36 : x - Step 2: Convert to fraction form
128,455,132.50/177,268,258.20 = 69,717,798.36/x - Step 3: Cross multiply
128,455,132.50x = 177,268,258.20 × 69,717,798.36 - Step 4: Simplify right side
128,455,132.50x = 12,358,752,680,816,016 - Step 5: Solve for x
x = 12,358,752,680,816,016/128,455,132.50 - Step 6: Final answer
x = 96,210,656.91
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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.