Finding the Fourth Proportional to 139,914,221.04, 193,081,882.68 and 78,038,547.84
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Solution
The fourth proportional to 139,914,221.04, 193,081,882.68 and 78,038,547.84 is: 107,693,339.72
Step by Step Solution
- Step 1: Write the proportion equation
139,914,221.04 : 193,081,882.68 = 78,038,547.84 : x - Step 2: Convert to fraction form
139,914,221.04/193,081,882.68 = 78,038,547.84/x - Step 3: Cross multiply
139,914,221.04x = 193,081,882.68 × 78,038,547.84 - Step 4: Simplify right side
139,914,221.04x = 15,067,829,738,560,448 - Step 5: Solve for x
x = 15,067,829,738,560,448/139,914,221.04 - Step 6: Final answer
x = 107,693,339.72
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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.