Finding the Fourth Proportional to 147,720.94, 203,830.86 and 87,283.18
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Solution
The fourth proportional to 147,720.94, 203,830.86 and 87,283.18 is: 120,436.59
Step by Step Solution
- Step 1: Write the proportion equation
147,720.94 : 203,830.86 = 87,283.18 : x - Step 2: Convert to fraction form
147,720.94/203,830.86 = 87,283.18/x - Step 3: Cross multiply
147,720.94x = 203,830.86 × 87,283.18 - Step 4: Simplify right side
147,720.94x = 17,791,005,642.93 - Step 5: Solve for x
x = 17,791,005,642.93/147,720.94 - Step 6: Final answer
x = 120,436.59
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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.