Finding the Fourth Proportional to 97,008,277.20, 145,299,839.40 and 86,237,739.60
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Solution
The fourth proportional to 97,008,277.20, 145,299,839.40 and 86,237,739.60 is: 129,167,634.72
Step by Step Solution
- Step 1: Write the proportion equation
97,008,277.20 : 145,299,839.40 = 86,237,739.60 : x - Step 2: Convert to fraction form
97,008,277.20/145,299,839.40 = 86,237,739.60/x - Step 3: Cross multiply
97,008,277.20x = 145,299,839.40 × 86,237,739.60 - Step 4: Simplify right side
97,008,277.20x = 12,530,329,714,099,020 - Step 5: Solve for x
x = 12,530,329,714,099,020/97,008,277.20 - Step 6: Final answer
x = 129,167,634.72
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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.