Finding the Fourth Proportional to 138,624.98, 191,302.52 and 74,962.80
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Solution
The fourth proportional to 138,624.98, 191,302.52 and 74,962.80 is: 103,448.69
Step by Step Solution
- Step 1: Write the proportion equation
138,624.98 : 191,302.52 = 74,962.80 : x - Step 2: Convert to fraction form
138,624.98/191,302.52 = 74,962.80/x - Step 3: Cross multiply
138,624.98x = 191,302.52 × 74,962.80 - Step 4: Simplify right side
138,624.98x = 14,340,572,171.44 - Step 5: Solve for x
x = 14,340,572,171.44/138,624.98 - Step 6: Final answer
x = 103,448.69
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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.