Finding the Fourth Proportional to 129,126,322,562.88, 178,193,830,363.68 and 72,033,587,589.44
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Solution
The fourth proportional to 129,126,322,562.88, 178,193,830,363.68 and 72,033,587,589.44 is: 99,406,074,862.46
Step by Step Solution
- Step 1: Write the proportion equation
129,126,322,562.88 : 178,193,830,363.68 = 72,033,587,589.44 : x - Step 2: Convert to fraction form
129,126,322,562.88/178,193,830,363.68 = 72,033,587,589.44/x - Step 3: Cross multiply
129,126,322,562.88x = 178,193,830,363.68 × 72,033,587,589.44 - Step 4: Simplify right side
129,126,322,562.88x = 12,835,940,887,399,957,004,288 - Step 5: Solve for x
x = 12,835,940,887,399,957,004,288/129,126,322,562.88 - Step 6: Final answer
x = 99,406,074,862.46
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1.5x scale
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.