Finding the Fourth Proportional to 97,112.90, 145,669.35 and 67,621.70
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Solution
The fourth proportional to 97,112.90, 145,669.35 and 67,621.70 is: 101,432.55
Step by Step Solution
- Step 1: Write the proportion equation
97,112.90 : 145,669.35 = 67,621.70 : x - Step 2: Convert to fraction form
97,112.90/145,669.35 = 67,621.70/x - Step 3: Cross multiply
97,112.90x = 145,669.35 × 67,621.70 - Step 4: Simplify right side
97,112.90x = 9,850,409,084.90 - Step 5: Solve for x
x = 9,850,409,084.90/97,112.90 - Step 6: Final answer
x = 101,432.55
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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.