Finding the Fourth Proportional to 118,705.08, 163,813.48 and 64,995.09
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Solution
The fourth proportional to 118,705.08, 163,813.48 and 64,995.09 is: 89,693.48
Step by Step Solution
- Step 1: Write the proportion equation
118,705.08 : 163,813.48 = 64,995.09 : x - Step 2: Convert to fraction form
118,705.08/163,813.48 = 64,995.09/x - Step 3: Cross multiply
118,705.08x = 163,813.48 × 64,995.09 - Step 4: Simplify right side
118,705.08x = 10,647,071,875.81 - Step 5: Solve for x
x = 10,647,071,875.81/118,705.08 - Step 6: Final answer
x = 89,693.48
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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.