Finding the Fourth Proportional to 198,425.08, 273,831.55 and 107,781.02
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Solution
The fourth proportional to 198,425.08, 273,831.55 and 107,781.02 is: 148,740.49
Step by Step Solution
- Step 1: Write the proportion equation
198,425.08 : 273,831.55 = 107,781.02 : x - Step 2: Convert to fraction form
198,425.08/273,831.55 = 107,781.02/x - Step 3: Cross multiply
198,425.08x = 273,831.55 × 107,781.02 - Step 4: Simplify right side
198,425.08x = 29,513,843,767.18 - Step 5: Solve for x
x = 29,513,843,767.18/198,425.08 - Step 6: Final answer
x = 148,740.49
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1.5x scale
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.