Finding the Fourth Proportional to 113,990.68, 157,303.92 and 63,689.68
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Solution
The fourth proportional to 113,990.68, 157,303.92 and 63,689.68 is: 87,889.96
Step by Step Solution
- Step 1: Write the proportion equation
113,990.68 : 157,303.92 = 63,689.68 : x - Step 2: Convert to fraction form
113,990.68/157,303.92 = 63,689.68/x - Step 3: Cross multiply
113,990.68x = 157,303.92 × 63,689.68 - Step 4: Simplify right side
113,990.68x = 10,018,636,327.55 - Step 5: Solve for x
x = 10,018,636,327.55/113,990.68 - Step 6: Final answer
x = 87,889.96
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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.