Finding the Fourth Proportional to 122,789,947.68, 169,445,678.76 and 67,784,623.20
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Solution
The fourth proportional to 122,789,947.68, 169,445,678.76 and 67,784,623.20 is: 93,540,323.98
Step by Step Solution
- Step 1: Write the proportion equation
122,789,947.68 : 169,445,678.76 = 67,784,623.20 : x - Step 2: Convert to fraction form
122,789,947.68/169,445,678.76 = 67,784,623.20/x - Step 3: Cross multiply
122,789,947.68x = 169,445,678.76 × 67,784,623.20 - Step 4: Simplify right side
122,789,947.68x = 11,485,811,487,614,844 - Step 5: Solve for x
x = 11,485,811,487,614,844/122,789,947.68 - Step 6: Final answer
x = 93,540,323.98
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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.