Finding the Fourth Proportional to 125,147,541.58, 172,703,979.38 and 69,396,889.54
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Solution
The fourth proportional to 125,147,541.58, 172,703,979.38 and 69,396,889.54 is: 95,767,913.85
Step by Step Solution
- Step 1: Write the proportion equation
125,147,541.58 : 172,703,979.38 = 69,396,889.54 : x - Step 2: Convert to fraction form
125,147,541.58/172,703,979.38 = 69,396,889.54/x - Step 3: Cross multiply
125,147,541.58x = 172,703,979.38 × 69,396,889.54 - Step 4: Simplify right side
125,147,541.58x = 11,985,118,980,152,298 - Step 5: Solve for x
x = 11,985,118,980,152,298/125,147,541.58 - Step 6: Final answer
x = 95,767,913.85
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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.