Finding the Fourth Proportional to 135,973.72, 187,670.58 and 86,883.94
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Solution
The fourth proportional to 135,973.72, 187,670.58 and 86,883.94 is: 119,916.99
Step by Step Solution
- Step 1: Write the proportion equation
135,973.72 : 187,670.58 = 86,883.94 : x - Step 2: Convert to fraction form
135,973.72/187,670.58 = 86,883.94/x - Step 3: Cross multiply
135,973.72x = 187,670.58 × 86,883.94 - Step 4: Simplify right side
135,973.72x = 16,305,559,412.49 - Step 5: Solve for x
x = 16,305,559,412.49/135,973.72 - Step 6: Final answer
x = 119,916.99
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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.