Finding the Fourth Proportional to 130,833.99, 180,574.47 and 77,115.87
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Solution
The fourth proportional to 130,833.99, 180,574.47 and 77,115.87 is: 106,433.79
Step by Step Solution
- Step 1: Write the proportion equation
130,833.99 : 180,574.47 = 77,115.87 : x - Step 2: Convert to fraction form
130,833.99/180,574.47 = 77,115.87/x - Step 3: Cross multiply
130,833.99x = 180,574.47 × 77,115.87 - Step 4: Simplify right side
130,833.99x = 13,925,157,353.84 - Step 5: Solve for x
x = 13,925,157,353.84/130,833.99 - Step 6: Final answer
x = 106,433.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.