Finding the Fourth Proportional to 121,794.78, 168,030.14 and 74,030.70
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Solution
The fourth proportional to 121,794.78, 168,030.14 and 74,030.70 is: 102,134.00
Step by Step Solution
- Step 1: Write the proportion equation
121,794.78 : 168,030.14 = 74,030.70 : x - Step 2: Convert to fraction form
121,794.78/168,030.14 = 74,030.70/x - Step 3: Cross multiply
121,794.78x = 168,030.14 × 74,030.70 - Step 4: Simplify right side
121,794.78x = 12,439,388,515.14 - Step 5: Solve for x
x = 12,439,388,515.14/121,794.78 - Step 6: Final answer
x = 102,134.00
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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.