Finding the Fourth Proportional to 107,188.47, 147,909.42 and 61,881.08
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Solution
The fourth proportional to 107,188.47, 147,909.42 and 61,881.08 is: 85,389.72
Step by Step Solution
- Step 1: Write the proportion equation
107,188.47 : 147,909.42 = 61,881.08 : x - Step 2: Convert to fraction form
107,188.47/147,909.42 = 61,881.08/x - Step 3: Cross multiply
107,188.47x = 147,909.42 × 61,881.08 - Step 4: Simplify right side
107,188.47x = 9,152,793,912.23 - Step 5: Solve for x
x = 9,152,793,912.23/107,188.47 - Step 6: Final answer
x = 85,389.72
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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.