Finding the Fourth Proportional to 126,756.68, 190,134.50 and 31,987.08
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Solution
The fourth proportional to 126,756.68, 190,134.50 and 31,987.08 is: 47,980.49
Step by Step Solution
- Step 1: Write the proportion equation
126,756.68 : 190,134.50 = 31,987.08 : x - Step 2: Convert to fraction form
126,756.68/190,134.50 = 31,987.08/x - Step 3: Cross multiply
126,756.68x = 190,134.50 × 31,987.08 - Step 4: Simplify right side
126,756.68x = 6,081,847,462.26 - Step 5: Solve for x
x = 6,081,847,462.26/126,756.68 - Step 6: Final answer
x = 47,980.49
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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.