Finding the Fourth Proportional to 124,370,141.31, 171,635,879.88 and 68,621,980.41
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Solution
The fourth proportional to 124,370,141.31, 171,635,879.88 and 68,621,980.41 is: 94,701,138.57
Step by Step Solution
- Step 1: Write the proportion equation
124,370,141.31 : 171,635,879.88 = 68,621,980.41 : x - Step 2: Convert to fraction form
124,370,141.31/171,635,879.88 = 68,621,980.41/x - Step 3: Cross multiply
124,370,141.31x = 171,635,879.88 × 68,621,980.41 - Step 4: Simplify right side
124,370,141.31x = 11,777,993,986,778,472 - Step 5: Solve for x
x = 11,777,993,986,778,472/124,370,141.31 - Step 6: Final answer
x = 94,701,138.57
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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.