Finding the Fourth Proportional to 103,177.09, 142,374.49 and 57,856.98
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Solution
The fourth proportional to 103,177.09, 142,374.49 and 57,856.98 is: 79,837.09
Step by Step Solution
- Step 1: Write the proportion equation
103,177.09 : 142,374.49 = 57,856.98 : x - Step 2: Convert to fraction form
103,177.09/142,374.49 = 57,856.98/x - Step 3: Cross multiply
103,177.09x = 142,374.49 × 57,856.98 - Step 4: Simplify right side
103,177.09x = 8,237,358,020.44 - Step 5: Solve for x
x = 8,237,358,020.44/103,177.09 - Step 6: Final answer
x = 79,837.09
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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.