Finding the Fourth Proportional to 155,138.60, 214,089.99 and 87,154.12
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Solution
The fourth proportional to 155,138.60, 214,089.99 and 87,154.12 is: 120,271.97
Step by Step Solution
- Step 1: Write the proportion equation
155,138.60 : 214,089.99 = 87,154.12 : x - Step 2: Convert to fraction form
155,138.60/214,089.99 = 87,154.12/x - Step 3: Cross multiply
155,138.60x = 214,089.99 × 87,154.12 - Step 4: Simplify right side
155,138.60x = 18,658,825,146.91 - Step 5: Solve for x
x = 18,658,825,146.91/155,138.60 - Step 6: Final answer
x = 120,271.97
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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.