Finding the Fourth Proportional to 128,332,258.36, 177,106,006.86 and 72,582,621.22
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Solution
The fourth proportional to 128,332,258.36, 177,106,006.86 and 72,582,621.22 is: 100,168,253.69
Step by Step Solution
- Step 1: Write the proportion equation
128,332,258.36 : 177,106,006.86 = 72,582,621.22 : x - Step 2: Convert to fraction form
128,332,258.36/177,106,006.86 = 72,582,621.22/x - Step 3: Cross multiply
128,332,258.36x = 177,106,006.86 × 72,582,621.22 - Step 4: Simplify right side
128,332,258.36x = 12,854,818,211,706,102 - Step 5: Solve for x
x = 12,854,818,211,706,102/128,332,258.36 - Step 6: Final answer
x = 100,168,253.69
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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.