Finding the Fourth Proportional to 129,350,915.16, 178,504,987.96 and 73,596,334.22
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Solution
The fourth proportional to 129,350,915.16, 178,504,987.96 and 73,596,334.22 is: 101,563,353.75
Step by Step Solution
- Step 1: Write the proportion equation
129,350,915.16 : 178,504,987.96 = 73,596,334.22 : x - Step 2: Convert to fraction form
129,350,915.16/178,504,987.96 = 73,596,334.22/x - Step 3: Cross multiply
129,350,915.16x = 178,504,987.96 × 73,596,334.22 - Step 4: Simplify right side
129,350,915.16x = 13,137,312,753,841,236 - Step 5: Solve for x
x = 13,137,312,753,841,236/129,350,915.16 - Step 6: Final answer
x = 101,563,353.75
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1.5x scale
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.