Finding the Fourth Proportional to 102,106,921.62, 140,908,451.13 and 55,697,381.94
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Solution
The fourth proportional to 102,106,921.62, 140,908,451.13 and 55,697,381.94 is: 76,862,877.63
Step by Step Solution
- Step 1: Write the proportion equation
102,106,921.62 : 140,908,451.13 = 55,697,381.94 : x - Step 2: Convert to fraction form
102,106,921.62/140,908,451.13 = 55,697,381.94/x - Step 3: Cross multiply
102,106,921.62x = 140,908,451.13 × 55,697,381.94 - Step 4: Simplify right side
102,106,921.62x = 7,848,231,821,161,434 - Step 5: Solve for x
x = 7,848,231,821,161,434/102,106,921.62 - Step 6: Final answer
x = 76,862,877.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.