Finding the Fourth Proportional to 105,616.84, 145,737.38 and 63,159.88
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Solution
The fourth proportional to 105,616.84, 145,737.38 and 63,159.88 is: 87,152.35
Step by Step Solution
- Step 1: Write the proportion equation
105,616.84 : 145,737.38 = 63,159.88 : x - Step 2: Convert to fraction form
105,616.84/145,737.38 = 63,159.88/x - Step 3: Cross multiply
105,616.84x = 145,737.38 × 63,159.88 - Step 4: Simplify right side
105,616.84x = 9,204,755,432.31 - Step 5: Solve for x
x = 9,204,755,432.31/105,616.84 - Step 6: Final answer
x = 87,152.35
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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.