Finding the Fourth Proportional to 125,615.80, 188,423.70 and 42,509.80
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Solution
The fourth proportional to 125,615.80, 188,423.70 and 42,509.80 is: 63,764.70
Step by Step Solution
- Step 1: Write the proportion equation
125,615.80 : 188,423.70 = 42,509.80 : x - Step 2: Convert to fraction form
125,615.80/188,423.70 = 42,509.80/x - Step 3: Cross multiply
125,615.80x = 188,423.70 × 42,509.80 - Step 4: Simplify right side
125,615.80x = 8,009,853,802.26 - Step 5: Solve for x
x = 8,009,853,802.26/125,615.80 - Step 6: Final answer
x = 63,764.70
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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.