Finding the Fourth Proportional to 128,862,602.70, 177,830,420.76 and 70,915,850.70
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Solution
The fourth proportional to 128,862,602.70, 177,830,420.76 and 70,915,850.70 is: 97,863,889.94
Step by Step Solution
- Step 1: Write the proportion equation
128,862,602.70 : 177,830,420.76 = 70,915,850.70 : x - Step 2: Convert to fraction form
128,862,602.70/177,830,420.76 = 70,915,850.70/x - Step 3: Cross multiply
128,862,602.70x = 177,830,420.76 × 70,915,850.70 - Step 4: Simplify right side
128,862,602.70x = 12,610,995,568,534,340 - Step 5: Solve for x
x = 12,610,995,568,534,340/128,862,602.70 - Step 6: Final answer
x = 97,863,889.94
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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.