Finding the Fourth Proportional to 260,108.14, 390,162.21 and 73,119.64
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Solution
The fourth proportional to 260,108.14, 390,162.21 and 73,119.64 is: 109,679.45
Step by Step Solution
- Step 1: Write the proportion equation
260,108.14 : 390,162.21 = 73,119.64 : x - Step 2: Convert to fraction form
260,108.14/390,162.21 = 73,119.64/x - Step 3: Cross multiply
260,108.14x = 390,162.21 × 73,119.64 - Step 4: Simplify right side
260,108.14x = 28,528,518,020.40 - Step 5: Solve for x
x = 28,528,518,020.40/260,108.14 - Step 6: Final answer
x = 109,679.45
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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.