Finding the Fourth Proportional to 158,458.58, 218,671.08 and 85,860.08
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Solution
The fourth proportional to 158,458.58, 218,671.08 and 85,860.08 is: 118,485.96
Step by Step Solution
- Step 1: Write the proportion equation
158,458.58 : 218,671.08 = 85,860.08 : x - Step 2: Convert to fraction form
158,458.58/218,671.08 = 85,860.08/x - Step 3: Cross multiply
158,458.58x = 218,671.08 × 85,860.08 - Step 4: Simplify right side
158,458.58x = 18,775,116,422.49 - Step 5: Solve for x
x = 18,775,116,422.49/158,458.58 - Step 6: Final answer
x = 118,485.96
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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.