Finding the Fourth Proportional to 128,831.72, 193,157.04 and 56,750.44
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Solution
The fourth proportional to 128,831.72, 193,157.04 and 56,750.44 is: 85,085.78
Step by Step Solution
- Step 1: Write the proportion equation
128,831.72 : 193,157.04 = 56,750.44 : x - Step 2: Convert to fraction form
128,831.72/193,157.04 = 56,750.44/x - Step 3: Cross multiply
128,831.72x = 193,157.04 × 56,750.44 - Step 4: Simplify right side
128,831.72x = 10,961,747,009.10 - Step 5: Solve for x
x = 10,961,747,009.10/128,831.72 - Step 6: Final answer
x = 85,085.78
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.