Finding the Fourth Proportional to 122,525,216.76, 169,079,879.28 and 66,769,448.81
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Solution
The fourth proportional to 122,525,216.76, 169,079,879.28 and 66,769,448.81 is: 92,139,158.31
Step by Step Solution
- Step 1: Write the proportion equation
122,525,216.76 : 169,079,879.28 = 66,769,448.81 : x - Step 2: Convert to fraction form
122,525,216.76/169,079,879.28 = 66,769,448.81/x - Step 3: Cross multiply
122,525,216.76x = 169,079,879.28 × 66,769,448.81 - Step 4: Simplify right side
122,525,216.76x = 11,289,370,344,386,940 - Step 5: Solve for x
x = 11,289,370,344,386,940/122,525,216.76 - Step 6: Final answer
x = 92,139,158.31
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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.