Finding the Fourth Proportional to 129,777,043,673.84, 179,035,271,263.32 and 78,306,894,477.68
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Solution
The fourth proportional to 129,777,043,673.84, 179,035,271,263.32 and 78,306,894,477.68 is: 108,029,091,260.81
Step by Step Solution
- Step 1: Write the proportion equation
129,777,043,673.84 : 179,035,271,263.32 = 78,306,894,477.68 : x - Step 2: Convert to fraction form
129,777,043,673.84/179,035,271,263.32 = 78,306,894,477.68/x - Step 3: Cross multiply
129,777,043,673.84x = 179,035,271,263.32 × 78,306,894,477.68 - Step 4: Simplify right side
129,777,043,673.84x = 14,019,696,094,599,612,203,008 - Step 5: Solve for x
x = 14,019,696,094,599,612,203,008/129,777,043,673.84 - Step 6: Final answer
x = 108,029,091,260.81
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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.