Finding the Fourth Proportional to 155,479.30, 214,572.65 and 87,503.09
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Solution
The fourth proportional to 155,479.30, 214,572.65 and 87,503.09 is: 120,760.57
Step by Step Solution
- Step 1: Write the proportion equation
155,479.30 : 214,572.65 = 87,503.09 : x - Step 2: Convert to fraction form
155,479.30/214,572.65 = 87,503.09/x - Step 3: Cross multiply
155,479.30x = 214,572.65 × 87,503.09 - Step 4: Simplify right side
155,479.30x = 18,775,768,394.11 - Step 5: Solve for x
x = 18,775,768,394.11/155,479.30 - Step 6: Final answer
x = 120,760.57
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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.