Finding the Fourth Proportional to 138,014.40, 206,503.20 and 125,572.80
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Solution
The fourth proportional to 138,014.40, 206,503.20 and 125,572.80 is: 187,887.53
Step by Step Solution
- Step 1: Write the proportion equation
138,014.40 : 206,503.20 = 125,572.80 : x - Step 2: Convert to fraction form
138,014.40/206,503.20 = 125,572.80/x - Step 3: Cross multiply
138,014.40x = 206,503.20 × 125,572.80 - Step 4: Simplify right side
138,014.40x = 25,931,185,032.96 - Step 5: Solve for x
x = 25,931,185,032.96/138,014.40 - Step 6: Final answer
x = 187,887.53
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1.5x scale
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.