Finding the Fourth Proportional to 130,807.56, 195,868.79 and 85,686.99
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Solution
The fourth proportional to 130,807.56, 195,868.79 and 85,686.99 is: 128,306.09
Step by Step Solution
- Step 1: Write the proportion equation
130,807.56 : 195,868.79 = 85,686.99 : x - Step 2: Convert to fraction form
130,807.56/195,868.79 = 85,686.99/x - Step 3: Cross multiply
130,807.56x = 195,868.79 × 85,686.99 - Step 4: Simplify right side
130,807.56x = 16,783,406,621.61 - Step 5: Solve for x
x = 16,783,406,621.61/130,807.56 - Step 6: Final answer
x = 128,306.09
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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.