Finding the Fourth Proportional to 97,880.60, 146,820.90 and 68,331.80
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Solution
The fourth proportional to 97,880.60, 146,820.90 and 68,331.80 is: 102,497.70
Step by Step Solution
- Step 1: Write the proportion equation
97,880.60 : 146,820.90 = 68,331.80 : x - Step 2: Convert to fraction form
97,880.60/146,820.90 = 68,331.80/x - Step 3: Cross multiply
97,880.60x = 146,820.90 × 68,331.80 - Step 4: Simplify right side
97,880.60x = 10,032,536,374.62 - Step 5: Solve for x
x = 10,032,536,374.62/97,880.60 - Step 6: Final answer
x = 102,497.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.