Finding the Fourth Proportional to 86,920,128,027.20, 130,380,192,040.80 and 72,972,990,423.20
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Solution
The fourth proportional to 86,920,128,027.20, 130,380,192,040.80 and 72,972,990,423.20 is: 109,459,485,634.80
Step by Step Solution
- Step 1: Write the proportion equation
86,920,128,027.20 : 130,380,192,040.80 = 72,972,990,423.20 : x - Step 2: Convert to fraction form
86,920,128,027.20/130,380,192,040.80 = 72,972,990,423.20/x - Step 3: Cross multiply
86,920,128,027.20x = 130,380,192,040.80 × 72,972,990,423.20 - Step 4: Simplify right side
86,920,128,027.20x = 9,514,232,505,168,274,915,328 - Step 5: Solve for x
x = 9,514,232,505,168,274,915,328/86,920,128,027.20 - Step 6: Final answer
x = 109,459,485,634.80
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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.