Finding the Fourth Proportional to 126,118,878.40, 189,087,523.62 and 77,496,271.12
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Solution
The fourth proportional to 126,118,878.40, 189,087,523.62 and 77,496,271.12 is: 116,188,616.50
Step by Step Solution
- Step 1: Write the proportion equation
126,118,878.40 : 189,087,523.62 = 77,496,271.12 : x - Step 2: Convert to fraction form
126,118,878.40/189,087,523.62 = 77,496,271.12/x - Step 3: Cross multiply
126,118,878.40x = 189,087,523.62 × 77,496,271.12 - Step 4: Simplify right side
126,118,878.40x = 14,653,577,995,864,926 - Step 5: Solve for x
x = 14,653,577,995,864,926/126,118,878.40 - Step 6: Final answer
x = 116,188,616.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.