Finding the Fourth Proportional to 138,356.19, 190,929.56 and 77,927.49
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Solution
The fourth proportional to 138,356.19, 190,929.56 and 77,927.49 is: 107,538.82
Step by Step Solution
- Step 1: Write the proportion equation
138,356.19 : 190,929.56 = 77,927.49 : x - Step 2: Convert to fraction form
138,356.19/190,929.56 = 77,927.49/x - Step 3: Cross multiply
138,356.19x = 190,929.56 × 77,927.49 - Step 4: Simplify right side
138,356.19x = 14,878,660,987.97 - Step 5: Solve for x
x = 14,878,660,987.97/138,356.19 - Step 6: Final answer
x = 107,538.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.