Finding the Fourth Proportional to 157,619.80, 236,429.70 and 138,920.95
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Solution
The fourth proportional to 157,619.80, 236,429.70 and 138,920.95 is: 208,381.43
Step by Step Solution
- Step 1: Write the proportion equation
157,619.80 : 236,429.70 = 138,920.95 : x - Step 2: Convert to fraction form
157,619.80/236,429.70 = 138,920.95/x - Step 3: Cross multiply
157,619.80x = 236,429.70 × 138,920.95 - Step 4: Simplify right side
157,619.80x = 32,845,038,532.22 - Step 5: Solve for x
x = 32,845,038,532.22/157,619.80 - Step 6: Final answer
x = 208,381.43
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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.