Finding the Fourth Proportional to 129,542,129.16, 178,767,704.07 and 70,804,760.28
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Solution
The fourth proportional to 129,542,129.16, 178,767,704.07 and 70,804,760.28 is: 97,710,331.88
Step by Step Solution
- Step 1: Write the proportion equation
129,542,129.16 : 178,767,704.07 = 70,804,760.28 : x - Step 2: Convert to fraction form
129,542,129.16/178,767,704.07 = 70,804,760.28/x - Step 3: Cross multiply
129,542,129.16x = 178,767,704.07 × 70,804,760.28 - Step 4: Simplify right side
129,542,129.16x = 12,657,604,432,482,330 - Step 5: Solve for x
x = 12,657,604,432,482,330/129,542,129.16 - Step 6: Final answer
x = 97,710,331.88
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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.