Finding the Fourth Proportional to 121,747,607.68, 168,013,863.36 and 65,994,854.08
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Solution
The fourth proportional to 121,747,607.68, 168,013,863.36 and 65,994,854.08 is: 91,074,072.07
Step by Step Solution
- Step 1: Write the proportion equation
121,747,607.68 : 168,013,863.36 = 65,994,854.08 : x - Step 2: Convert to fraction form
121,747,607.68/168,013,863.36 = 65,994,854.08/x - Step 3: Cross multiply
121,747,607.68x = 168,013,863.36 × 65,994,854.08 - Step 4: Simplify right side
121,747,607.68x = 11,088,050,395,860,260 - Step 5: Solve for x
x = 11,088,050,395,860,260/121,747,607.68 - Step 6: Final answer
x = 91,074,072.07
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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.