Finding the Fourth Proportional to 85,613,182.80, 128,207,197.80 and 68,607,070.80
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Solution
The fourth proportional to 85,613,182.80, 128,207,197.80 and 68,607,070.80 is: 102,740,255.75
Step by Step Solution
- Step 1: Write the proportion equation
85,613,182.80 : 128,207,197.80 = 68,607,070.80 : x - Step 2: Convert to fraction form
85,613,182.80/128,207,197.80 = 68,607,070.80/x - Step 3: Cross multiply
85,613,182.80x = 128,207,197.80 × 68,607,070.80 - Step 4: Simplify right side
85,613,182.80x = 8,795,920,296,534,204 - Step 5: Solve for x
x = 8,795,920,296,534,204/85,613,182.80 - Step 6: Final answer
x = 102,740,255.75
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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.