Finding the Fourth Proportional to 159,002.61, 219,421.08 and 87,381.09
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Solution
The fourth proportional to 159,002.61, 219,421.08 and 87,381.09 is: 120,584.52
Step by Step Solution
- Step 1: Write the proportion equation
159,002.61 : 219,421.08 = 87,381.09 : x - Step 2: Convert to fraction form
159,002.61/219,421.08 = 87,381.09/x - Step 3: Cross multiply
159,002.61x = 219,421.08 × 87,381.09 - Step 4: Simplify right side
159,002.61x = 19,173,253,139.38 - Step 5: Solve for x
x = 19,173,253,139.38/159,002.61 - Step 6: Final answer
x = 120,584.52
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1.5x scale
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.