Finding the Fourth Proportional to 106,702,630.65, 147,168,387.79 and 91,843,245.05
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Solution
The fourth proportional to 106,702,630.65, 147,168,387.79 and 91,843,245.05 is: 126,673,749.47
Step by Step Solution
- Step 1: Write the proportion equation
106,702,630.65 : 147,168,387.79 = 91,843,245.05 : x - Step 2: Convert to fraction form
106,702,630.65/147,168,387.79 = 91,843,245.05/x - Step 3: Cross multiply
106,702,630.65x = 147,168,387.79 × 91,843,245.05 - Step 4: Simplify right side
106,702,630.65x = 13,516,422,302,987,070 - Step 5: Solve for x
x = 13,516,422,302,987,070/106,702,630.65 - Step 6: Final answer
x = 126,673,749.47
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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.