Finding the Fourth Proportional to 153,756.75, 212,184.36 and 86,688.75
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Solution
The fourth proportional to 153,756.75, 212,184.36 and 86,688.75 is: 119,630.50
Step by Step Solution
- Step 1: Write the proportion equation
153,756.75 : 212,184.36 = 86,688.75 : x - Step 2: Convert to fraction form
153,756.75/212,184.36 = 86,688.75/x - Step 3: Cross multiply
153,756.75x = 212,184.36 × 86,688.75 - Step 4: Simplify right side
153,756.75x = 18,393,996,937.95 - Step 5: Solve for x
x = 18,393,996,937.95/153,756.75 - Step 6: Final answer
x = 119,630.50
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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.