Finding the Fourth Proportional to 124,690,129.92, 172,072,628.64 and 69,685,984.80
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Solution
The fourth proportional to 124,690,129.92, 172,072,628.64 and 69,685,984.80 is: 96,166,798.38
Step by Step Solution
- Step 1: Write the proportion equation
124,690,129.92 : 172,072,628.64 = 69,685,984.80 : x - Step 2: Convert to fraction form
124,690,129.92/172,072,628.64 = 69,685,984.80/x - Step 3: Cross multiply
124,690,129.92x = 172,072,628.64 × 69,685,984.80 - Step 4: Simplify right side
124,690,129.92x = 11,991,050,583,903,084 - Step 5: Solve for x
x = 11,991,050,583,903,084/124,690,129.92 - Step 6: Final answer
x = 96,166,798.38
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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.