Finding the Fourth Proportional to 134,898.81, 186,098.68 and 78,277.38
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Solution
The fourth proportional to 134,898.81, 186,098.68 and 78,277.38 is: 107,986.99
Step by Step Solution
- Step 1: Write the proportion equation
134,898.81 : 186,098.68 = 78,277.38 : x - Step 2: Convert to fraction form
134,898.81/186,098.68 = 78,277.38/x - Step 3: Cross multiply
134,898.81x = 186,098.68 × 78,277.38 - Step 4: Simplify right side
134,898.81x = 14,567,317,091.86 - Step 5: Solve for x
x = 14,567,317,091.86/134,898.81 - Step 6: Final answer
x = 107,986.99
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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.