Finding the Fourth Proportional to 90,796,803.20, 136,195,204.80 and 85,488,387.20
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Solution
The fourth proportional to 90,796,803.20, 136,195,204.80 and 85,488,387.20 is: 128,232,580.80
Step by Step Solution
- Step 1: Write the proportion equation
90,796,803.20 : 136,195,204.80 = 85,488,387.20 : x - Step 2: Convert to fraction form
90,796,803.20/136,195,204.80 = 85,488,387.20/x - Step 3: Cross multiply
90,796,803.20x = 136,195,204.80 × 85,488,387.20 - Step 4: Simplify right side
90,796,803.20x = 11,643,108,402,725,700 - Step 5: Solve for x
x = 11,643,108,402,725,700/90,796,803.20 - Step 6: Final answer
x = 128,232,580.80
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Similar ratio
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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.