Finding the Fourth Proportional to 143,767,521.20, 215,431,841.64 and 85,360,183.31
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Solution
The fourth proportional to 143,767,521.20, 215,431,841.64 and 85,360,183.31 is: 127,909,985.09
Step by Step Solution
- Step 1: Write the proportion equation
143,767,521.20 : 215,431,841.64 = 85,360,183.31 : x - Step 2: Convert to fraction form
143,767,521.20/215,431,841.64 = 85,360,183.31/x - Step 3: Cross multiply
143,767,521.20x = 215,431,841.64 × 85,360,183.31 - Step 4: Simplify right side
143,767,521.20x = 18,389,301,493,201,292 - Step 5: Solve for x
x = 18,389,301,493,201,292/143,767,521.20 - Step 6: Final answer
x = 127,909,985.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.