Finding the Fourth Proportional to 130,129.40, 195,485.70 and 124,815.80
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Solution
The fourth proportional to 130,129.40, 195,485.70 and 124,815.80 is: 187,503.39
Step by Step Solution
- Step 1: Write the proportion equation
130,129.40 : 195,485.70 = 124,815.80 : x - Step 2: Convert to fraction form
130,129.40/195,485.70 = 124,815.80/x - Step 3: Cross multiply
130,129.40x = 195,485.70 × 124,815.80 - Step 4: Simplify right side
130,129.40x = 24,399,704,034.06 - Step 5: Solve for x
x = 24,399,704,034.06/130,129.40 - Step 6: Final answer
x = 187,503.39
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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.