Finding the Fourth Proportional to 128,480,564.76, 177,303,404.28 and 69,743,269.68
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Solution
The fourth proportional to 128,480,564.76, 177,303,404.28 and 69,743,269.68 is: 96,245,834.25
Step by Step Solution
- Step 1: Write the proportion equation
128,480,564.76 : 177,303,404.28 = 69,743,269.68 : x - Step 2: Convert to fraction form
128,480,564.76/177,303,404.28 = 69,743,269.68/x - Step 3: Cross multiply
128,480,564.76x = 177,303,404.28 × 69,743,269.68 - Step 4: Simplify right side
128,480,564.76x = 12,365,719,139,882,108 - Step 5: Solve for x
x = 12,365,719,139,882,108/128,480,564.76 - Step 6: Final answer
x = 96,245,834.25
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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.