Finding the Fourth Proportional to 90,798,138.30, 136,197,207.45 and 74,854,908.30
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Solution
The fourth proportional to 90,798,138.30, 136,197,207.45 and 74,854,908.30 is: 112,282,362.45
Step by Step Solution
- Step 1: Write the proportion equation
90,798,138.30 : 136,197,207.45 = 74,854,908.30 : x - Step 2: Convert to fraction form
90,798,138.30/136,197,207.45 = 74,854,908.30/x - Step 3: Cross multiply
90,798,138.30x = 136,197,207.45 × 74,854,908.30 - Step 4: Simplify right side
90,798,138.30x = 10,195,029,474,385,826 - Step 5: Solve for x
x = 10,195,029,474,385,826/90,798,138.30 - Step 6: Final answer
x = 112,282,362.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.