Finding the Fourth Proportional to 141,203,430.11, 194,865,728.79 and 78,480,778.79
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Solution
The fourth proportional to 141,203,430.11, 194,865,728.79 and 78,480,778.79 is: 108,306,251.08
Step by Step Solution
- Step 1: Write the proportion equation
141,203,430.11 : 194,865,728.79 = 78,480,778.79 : x - Step 2: Convert to fraction form
141,203,430.11/194,865,728.79 = 78,480,778.79/x - Step 3: Cross multiply
141,203,430.11x = 194,865,728.79 × 78,480,778.79 - Step 4: Simplify right side
141,203,430.11x = 15,293,214,153,945,794 - Step 5: Solve for x
x = 15,293,214,153,945,794/141,203,430.11 - Step 6: Final answer
x = 108,306,251.08
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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.