Finding the Fourth Proportional to 98,125.20, 147,187.80 and 69,985.80
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Solution
The fourth proportional to 98,125.20, 147,187.80 and 69,985.80 is: 104,978.70
Step by Step Solution
- Step 1: Write the proportion equation
98,125.20 : 147,187.80 = 69,985.80 : x - Step 2: Convert to fraction form
98,125.20/147,187.80 = 69,985.80/x - Step 3: Cross multiply
98,125.20x = 147,187.80 × 69,985.80 - Step 4: Simplify right side
98,125.20x = 10,301,055,933.24 - Step 5: Solve for x
x = 10,301,055,933.24/98,125.20 - Step 6: Final answer
x = 104,978.70
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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.