Finding the Fourth Proportional to 140,631,636.99, 194,053,254.81 and 81,095,132.06
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Solution
The fourth proportional to 140,631,636.99, 194,053,254.81 and 81,095,132.06 is: 111,900,669.45
Step by Step Solution
- Step 1: Write the proportion equation
140,631,636.99 : 194,053,254.81 = 81,095,132.06 : x - Step 2: Convert to fraction form
140,631,636.99/194,053,254.81 = 81,095,132.06/x - Step 3: Cross multiply
140,631,636.99x = 194,053,254.81 × 81,095,132.06 - Step 4: Simplify right side
140,631,636.99x = 15,736,774,325,603,324 - Step 5: Solve for x
x = 15,736,774,325,603,324/140,631,636.99 - Step 6: Final answer
x = 111,900,669.45
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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.