Finding the Fourth Proportional to 122,478,779.70, 183,718,169.55 and 84,215,027.70
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Solution
The fourth proportional to 122,478,779.70, 183,718,169.55 and 84,215,027.70 is: 126,322,541.55
Step by Step Solution
- Step 1: Write the proportion equation
122,478,779.70 : 183,718,169.55 = 84,215,027.70 : x - Step 2: Convert to fraction form
122,478,779.70/183,718,169.55 = 84,215,027.70/x - Step 3: Cross multiply
122,478,779.70x = 183,718,169.55 × 84,215,027.70 - Step 4: Simplify right side
122,478,779.70x = 15,471,830,737,646,548 - Step 5: Solve for x
x = 15,471,830,737,646,548/122,478,779.70 - Step 6: Final answer
x = 126,322,541.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.