Finding the Fourth Proportional to 103,604,702.76, 142,972,674.18 and 57,193,762.92
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Solution
The fourth proportional to 103,604,702.76, 142,972,674.18 and 57,193,762.92 is: 78,926,390.53
Step by Step Solution
- Step 1: Write the proportion equation
103,604,702.76 : 142,972,674.18 = 57,193,762.92 : x - Step 2: Convert to fraction form
103,604,702.76/142,972,674.18 = 57,193,762.92/x - Step 3: Cross multiply
103,604,702.76x = 142,972,674.18 × 57,193,762.92 - Step 4: Simplify right side
103,604,702.76x = 8,177,145,231,089,326 - Step 5: Solve for x
x = 8,177,145,231,089,326/103,604,702.76 - Step 6: Final answer
x = 78,926,390.53
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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.