Finding the Fourth Proportional to 138,588.60, 191,252.49 and 74,926.44
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Solution
The fourth proportional to 138,588.60, 191,252.49 and 74,926.44 is: 103,398.61
Step by Step Solution
- Step 1: Write the proportion equation
138,588.60 : 191,252.49 = 74,926.44 : x - Step 2: Convert to fraction form
138,588.60/191,252.49 = 74,926.44/x - Step 3: Cross multiply
138,588.60x = 191,252.49 × 74,926.44 - Step 4: Simplify right side
138,588.60x = 14,329,868,216.84 - Step 5: Solve for x
x = 14,329,868,216.84/138,588.60 - Step 6: Final answer
x = 103,398.61
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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.