Finding the Fourth Proportional to 142,489,415.98, 196,618,805.22 and 79,768,948.42
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Solution
The fourth proportional to 142,489,415.98, 196,618,805.22 and 79,768,948.42 is: 110,071,862.00
Step by Step Solution
- Step 1: Write the proportion equation
142,489,415.98 : 196,618,805.22 = 79,768,948.42 : x - Step 2: Convert to fraction form
142,489,415.98/196,618,805.22 = 79,768,948.42/x - Step 3: Cross multiply
142,489,415.98x = 196,618,805.22 × 79,768,948.42 - Step 4: Simplify right side
142,489,415.98x = 15,684,075,331,996,208 - Step 5: Solve for x
x = 15,684,075,331,996,208/142,489,415.98 - Step 6: Final answer
x = 110,071,862.00
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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.