Finding the Fourth Proportional to 113,988.60, 157,299.38 and 62,998.70
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Solution
The fourth proportional to 113,988.60, 157,299.38 and 62,998.70 is: 86,935.50
Step by Step Solution
- Step 1: Write the proportion equation
113,988.60 : 157,299.38 = 62,998.70 : x - Step 2: Convert to fraction form
113,988.60/157,299.38 = 62,998.70/x - Step 3: Cross multiply
113,988.60x = 157,299.38 × 62,998.70 - Step 4: Simplify right side
113,988.60x = 9,909,656,450.81 - Step 5: Solve for x
x = 9,909,656,450.81/113,988.60 - Step 6: Final answer
x = 86,935.50
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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.