Finding the Fourth Proportional to 125,197,062.75, 172,771,946.60 and 72,988,298.91
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Solution
The fourth proportional to 125,197,062.75, 172,771,946.60 and 72,988,298.91 is: 100,723,852.50
Step by Step Solution
- Step 1: Write the proportion equation
125,197,062.75 : 172,771,946.60 = 72,988,298.91 : x - Step 2: Convert to fraction form
125,197,062.75/172,771,946.60 = 72,988,298.91/x - Step 3: Cross multiply
125,197,062.75x = 172,771,946.60 × 72,988,298.91 - Step 4: Simplify right side
125,197,062.75x = 12,610,330,481,338,416 - Step 5: Solve for x
x = 12,610,330,481,338,416/125,197,062.75 - Step 6: Final answer
x = 100,723,852.50
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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.