Finding the Fourth Proportional to 128,434,409.76, 177,239,486.74 and 69,697,074.88
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Solution
The fourth proportional to 128,434,409.76, 177,239,486.74 and 69,697,074.88 is: 96,181,964.02
Step by Step Solution
- Step 1: Write the proportion equation
128,434,409.76 : 177,239,486.74 = 69,697,074.88 : x - Step 2: Convert to fraction form
128,434,409.76/177,239,486.74 = 69,697,074.88/x - Step 3: Cross multiply
128,434,409.76x = 177,239,486.74 × 69,697,074.88 - Step 4: Simplify right side
128,434,409.76x = 12,353,073,778,218,964 - Step 5: Solve for x
x = 12,353,073,778,218,964/128,434,409.76 - Step 6: Final answer
x = 96,181,964.02
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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.