Finding the Fourth Proportional to 128,013,445.60, 176,659,093.30 and 69,276,113.48
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Solution
The fourth proportional to 128,013,445.60, 176,659,093.30 and 69,276,113.48 is: 95,601,327.95
Step by Step Solution
- Step 1: Write the proportion equation
128,013,445.60 : 176,659,093.30 = 69,276,113.48 : x - Step 2: Convert to fraction form
128,013,445.60/176,659,093.30 = 69,276,113.48/x - Step 3: Cross multiply
128,013,445.60x = 176,659,093.30 × 69,276,113.48 - Step 4: Simplify right side
128,013,445.60x = 12,238,255,394,724,710 - Step 5: Solve for x
x = 12,238,255,394,724,710/128,013,445.60 - Step 6: Final answer
x = 95,601,327.95
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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.