Finding the Fourth Proportional to 97,071.60, 133,926.48 and 79,135.68
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Solution
The fourth proportional to 97,071.60, 133,926.48 and 79,135.68 is: 109,180.88
Step by Step Solution
- Step 1: Write the proportion equation
97,071.60 : 133,926.48 = 79,135.68 : x - Step 2: Convert to fraction form
97,071.60/133,926.48 = 79,135.68/x - Step 3: Cross multiply
97,071.60x = 133,926.48 × 79,135.68 - Step 4: Simplify right side
97,071.60x = 10,598,363,064.81 - Step 5: Solve for x
x = 10,598,363,064.81/97,071.60 - Step 6: Final answer
x = 109,180.88
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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.