Finding the Fourth Proportional to 86,174,719.95, 128,503,126.32 and 85,397,487.49
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Solution
The fourth proportional to 86,174,719.95, 128,503,126.32 and 85,397,487.49 is: 127,344,122.83
Step by Step Solution
- Step 1: Write the proportion equation
86,174,719.95 : 128,503,126.32 = 85,397,487.49 : x - Step 2: Convert to fraction form
86,174,719.95/128,503,126.32 = 85,397,487.49/x - Step 3: Cross multiply
86,174,719.95x = 128,503,126.32 × 85,397,487.49 - Step 4: Simplify right side
86,174,719.95x = 10,973,844,122,338,088 - Step 5: Solve for x
x = 10,973,844,122,338,088/86,174,719.95 - Step 6: Final answer
x = 127,344,122.83
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.