Finding the Fourth Proportional to 155,970.26, 215,139.86 and 102,258.75
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Solution
The fourth proportional to 155,970.26, 215,139.86 and 102,258.75 is: 141,052.11
Step by Step Solution
- Step 1: Write the proportion equation
155,970.26 : 215,139.86 = 102,258.75 : x - Step 2: Convert to fraction form
155,970.26/215,139.86 = 102,258.75/x - Step 3: Cross multiply
155,970.26x = 215,139.86 × 102,258.75 - Step 4: Simplify right side
155,970.26x = 21,999,933,158.78 - Step 5: Solve for x
x = 21,999,933,158.78/155,970.26 - Step 6: Final answer
x = 141,052.11
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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.