Finding the Fourth Proportional to 122,789,979.74, 169,445,723.01 and 67,784,655.26
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Solution
The fourth proportional to 122,789,979.74, 169,445,723.01 and 67,784,655.26 is: 93,540,368.23
Step by Step Solution
- Step 1: Write the proportion equation
122,789,979.74 : 169,445,723.01 = 67,784,655.26 : x - Step 2: Convert to fraction form
122,789,979.74/169,445,723.01 = 67,784,655.26/x - Step 3: Cross multiply
122,789,979.74x = 169,445,723.01 × 67,784,655.26 - Step 4: Simplify right side
122,789,979.74x = 11,485,819,919,683,722 - Step 5: Solve for x
x = 11,485,819,919,683,722/122,789,979.74 - Step 6: Final answer
x = 93,540,368.23
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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.