Finding the Fourth Proportional to 134,564.60, 201,603.90 and 78,358.70
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Solution
The fourth proportional to 134,564.60, 201,603.90 and 78,358.70 is: 117,396.55
Step by Step Solution
- Step 1: Write the proportion equation
134,564.60 : 201,603.90 = 78,358.70 : x - Step 2: Convert to fraction form
134,564.60/201,603.90 = 78,358.70/x - Step 3: Cross multiply
134,564.60x = 201,603.90 × 78,358.70 - Step 4: Simplify right side
134,564.60x = 15,797,419,518.93 - Step 5: Solve for x
x = 15,797,419,518.93/134,564.60 - Step 6: Final answer
x = 117,396.55
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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.