Finding the Fourth Proportional to 105,097.78, 145,034.88 and 67,372
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Solution
The fourth proportional to 105,097.78, 145,034.88 and 67,372 is: 92,973.32
Step by Step Solution
- Step 1: Write the proportion equation
105,097.78 : 145,034.88 = 67,372 : x - Step 2: Convert to fraction form
105,097.78/145,034.88 = 67,372/x - Step 3: Cross multiply
105,097.78x = 145,034.88 × 67,372 - Step 4: Simplify right side
105,097.78x = 9,771,289,935.36 - Step 5: Solve for x
x = 9,771,289,935.36/105,097.78 - Step 6: Final answer
x = 92,973.32
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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.