Finding the Fourth Proportional to 154,187,128.80, 230,826,292.92 and 135,055,252.80
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Solution
The fourth proportional to 154,187,128.80, 230,826,292.92 and 135,055,252.80 is: 202,184,861.90
Step by Step Solution
- Step 1: Write the proportion equation
154,187,128.80 : 230,826,292.92 = 135,055,252.80 : x - Step 2: Convert to fraction form
154,187,128.80/230,826,292.92 = 135,055,252.80/x - Step 3: Cross multiply
154,187,128.80x = 230,826,292.92 × 135,055,252.80 - Step 4: Simplify right side
154,187,128.80x = 31,174,303,343,197,452 - Step 5: Solve for x
x = 31,174,303,343,197,452/154,187,128.80 - Step 6: Final answer
x = 202,184,861.90
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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.