Finding the Fourth Proportional to 121,300,053.70, 181,572,166.95 and 87,287,829.70
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Solution
The fourth proportional to 121,300,053.70, 181,572,166.95 and 87,287,829.70 is: 130,659,796.95
Step by Step Solution
- Step 1: Write the proportion equation
121,300,053.70 : 181,572,166.95 = 87,287,829.70 : x - Step 2: Convert to fraction form
121,300,053.70/181,572,166.95 = 87,287,829.70/x - Step 3: Cross multiply
121,300,053.70x = 181,572,166.95 × 87,287,829.70 - Step 4: Simplify right side
121,300,053.70x = 15,849,040,386,991,568 - Step 5: Solve for x
x = 15,849,040,386,991,568/121,300,053.70 - Step 6: Final answer
x = 130,659,796.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.