Finding the Fourth Proportional to 103,913.26, 155,980.08 and 84,427.06
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Solution
The fourth proportional to 103,913.26, 155,980.08 and 84,427.06 is: 126,730.12
Step by Step Solution
- Step 1: Write the proportion equation
103,913.26 : 155,980.08 = 84,427.06 : x - Step 2: Convert to fraction form
103,913.26/155,980.08 = 84,427.06/x - Step 3: Cross multiply
103,913.26x = 155,980.08 × 84,427.06 - Step 4: Simplify right side
103,913.26x = 13,168,939,572.96 - Step 5: Solve for x
x = 13,168,939,572.96/103,913.26 - Step 6: Final answer
x = 126,730.12
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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.