Finding the Fourth Proportional to 113,991.18, 157,304.61 and 63,690.18
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Solution
The fourth proportional to 113,991.18, 157,304.61 and 63,690.18 is: 87,890.65
Step by Step Solution
- Step 1: Write the proportion equation
113,991.18 : 157,304.61 = 63,690.18 : x - Step 2: Convert to fraction form
113,991.18/157,304.61 = 63,690.18/x - Step 3: Cross multiply
113,991.18x = 157,304.61 × 63,690.18 - Step 4: Simplify right side
113,991.18x = 10,018,758,925.73 - Step 5: Solve for x
x = 10,018,758,925.73/113,991.18 - Step 6: Final answer
x = 87,890.65
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1.5x scale
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.