Finding the Fourth Proportional to 168,005.39, 251,920.58 and 79,235.06
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Solution
The fourth proportional to 168,005.39, 251,920.58 and 79,235.06 is: 118,811.32
Step by Step Solution
- Step 1: Write the proportion equation
168,005.39 : 251,920.58 = 79,235.06 : x - Step 2: Convert to fraction form
168,005.39/251,920.58 = 79,235.06/x - Step 3: Cross multiply
168,005.39x = 251,920.58 × 79,235.06 - Step 4: Simplify right side
168,005.39x = 19,960,941,061.45 - Step 5: Solve for x
x = 19,960,941,061.45/168,005.39 - Step 6: Final answer
x = 118,811.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.