Finding the Fourth Proportional to 158,376.47, 218,560.16 and 86,756.99
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Solution
The fourth proportional to 158,376.47, 218,560.16 and 86,756.99 is: 119,724.99
Step by Step Solution
- Step 1: Write the proportion equation
158,376.47 : 218,560.16 = 86,756.99 : x - Step 2: Convert to fraction form
158,376.47/218,560.16 = 86,756.99/x - Step 3: Cross multiply
158,376.47x = 218,560.16 × 86,756.99 - Step 4: Simplify right side
158,376.47x = 18,961,621,615.52 - Step 5: Solve for x
x = 18,961,621,615.52/158,376.47 - Step 6: Final answer
x = 119,724.99
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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.