Finding the Fourth Proportional to 128,642.48, 177,528.48 and 74,926.08
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Solution
The fourth proportional to 128,642.48, 177,528.48 and 74,926.08 is: 103,399.07
Step by Step Solution
- Step 1: Write the proportion equation
128,642.48 : 177,528.48 = 74,926.08 : x - Step 2: Convert to fraction form
128,642.48/177,528.48 = 74,926.08/x - Step 3: Cross multiply
128,642.48x = 177,528.48 × 74,926.08 - Step 4: Simplify right side
128,642.48x = 13,301,513,094.76 - Step 5: Solve for x
x = 13,301,513,094.76/128,642.48 - Step 6: Final answer
x = 103,399.07
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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.