Finding the Fourth Proportional to 155,416.28, 214,454.30 and 87,430.96
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Solution
The fourth proportional to 155,416.28, 214,454.30 and 87,430.96 is: 120,643.38
Step by Step Solution
- Step 1: Write the proportion equation
155,416.28 : 214,454.30 = 87,430.96 : x - Step 2: Convert to fraction form
155,416.28/214,454.30 = 87,430.96/x - Step 3: Cross multiply
155,416.28x = 214,454.30 × 87,430.96 - Step 4: Simplify right side
155,416.28x = 18,749,945,325.13 - Step 5: Solve for x
x = 18,749,945,325.13/155,416.28 - Step 6: Final answer
x = 120,643.38
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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.