Finding the Fourth Proportional to 131,178.12, 181,024.96 and 74,589.49
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Solution
The fourth proportional to 131,178.12, 181,024.96 and 74,589.49 is: 102,933.02
Step by Step Solution
- Step 1: Write the proportion equation
131,178.12 : 181,024.96 = 74,589.49 : x - Step 2: Convert to fraction form
131,178.12/181,024.96 = 74,589.49/x - Step 3: Cross multiply
131,178.12x = 181,024.96 × 74,589.49 - Step 4: Simplify right side
131,178.12x = 13,502,559,443.67 - Step 5: Solve for x
x = 13,502,559,443.67/131,178.12 - Step 6: Final answer
x = 102,933.02
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1.5x scale
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.