Finding the Fourth Proportional to 90,124.14, 135,186.52 and 84,643.58
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Solution
The fourth proportional to 90,124.14, 135,186.52 and 84,643.58 is: 126,965.66
Step by Step Solution
- Step 1: Write the proportion equation
90,124.14 : 135,186.52 = 84,643.58 : x - Step 2: Convert to fraction form
90,124.14/135,186.52 = 84,643.58/x - Step 3: Cross multiply
90,124.14x = 135,186.52 × 84,643.58 - Step 4: Simplify right side
90,124.14x = 11,442,671,305.61 - Step 5: Solve for x
x = 11,442,671,305.61/90,124.14 - Step 6: Final answer
x = 126,965.66
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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.