Finding the Fourth Proportional to 145,965.84, 201,432.60 and 78,897.84
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Solution
The fourth proportional to 145,965.84, 201,432.60 and 78,897.84 is: 108,878.88
Step by Step Solution
- Step 1: Write the proportion equation
145,965.84 : 201,432.60 = 78,897.84 : x - Step 2: Convert to fraction form
145,965.84/201,432.60 = 78,897.84/x - Step 3: Cross multiply
145,965.84x = 201,432.60 × 78,897.84 - Step 4: Simplify right side
145,965.84x = 15,892,597,045.58 - Step 5: Solve for x
x = 15,892,597,045.58/145,965.84 - Step 6: Final answer
x = 108,878.88
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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.