Finding the Fourth Proportional to 138,485,430.65, 191,093,244.58 and 79,767,192.53
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Solution
The fourth proportional to 138,485,430.65, 191,093,244.58 and 79,767,192.53 is: 110,069,135.50
Step by Step Solution
- Step 1: Write the proportion equation
138,485,430.65 : 191,093,244.58 = 79,767,192.53 : x - Step 2: Convert to fraction form
138,485,430.65/191,093,244.58 = 79,767,192.53/x - Step 3: Cross multiply
138,485,430.65x = 191,093,244.58 × 79,767,192.53 - Step 4: Simplify right side
138,485,430.65x = 15,242,971,631,595,240 - Step 5: Solve for x
x = 15,242,971,631,595,240/138,485,430.65 - Step 6: Final answer
x = 110,069,135.50
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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.