Finding the Fourth Proportional to 98,257,543,213.20, 147,386,314,819.80 and 81,931,675,693.20
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Solution
The fourth proportional to 98,257,543,213.20, 147,386,314,819.80 and 81,931,675,693.20 is: 122,897,513,539.80
Step by Step Solution
- Step 1: Write the proportion equation
98,257,543,213.20 : 147,386,314,819.80 = 81,931,675,693.20 : x - Step 2: Convert to fraction form
98,257,543,213.20/147,386,314,819.80 = 81,931,675,693.20/x - Step 3: Cross multiply
98,257,543,213.20x = 147,386,314,819.80 × 81,931,675,693.20 - Step 4: Simplify right side
98,257,543,213.20x = 12,075,607,747,431,728,414,720 - Step 5: Solve for x
x = 12,075,607,747,431,728,414,720/98,257,543,213.20 - Step 6: Final answer
x = 122,897,513,539.80
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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.