Finding the Fourth Proportional to 145,859,812.42, 201,348,518.97 and 90,882,831.46
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Solution
The fourth proportional to 145,859,812.42, 201,348,518.97 and 90,882,831.46 is: 125,456,924.77
Step by Step Solution
- Step 1: Write the proportion equation
145,859,812.42 : 201,348,518.97 = 90,882,831.46 : x - Step 2: Convert to fraction form
145,859,812.42/201,348,518.97 = 90,882,831.46/x - Step 3: Cross multiply
145,859,812.42x = 201,348,518.97 × 90,882,831.46 - Step 4: Simplify right side
145,859,812.42x = 18,299,123,514,271,120 - Step 5: Solve for x
x = 18,299,123,514,271,120/145,859,812.42 - Step 6: Final answer
x = 125,456,924.77
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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.