Finding the Fourth Proportional to 138,391,648.96, 190,984,462.32 and 76,515,982.24
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Solution
The fourth proportional to 138,391,648.96, 190,984,462.32 and 76,515,982.24 is: 105,594,259.75
Step by Step Solution
- Step 1: Write the proportion equation
138,391,648.96 : 190,984,462.32 = 76,515,982.24 : x - Step 2: Convert to fraction form
138,391,648.96/190,984,462.32 = 76,515,982.24/x - Step 3: Cross multiply
138,391,648.96x = 190,984,462.32 × 76,515,982.24 - Step 4: Simplify right side
138,391,648.96x = 14,613,363,726,993,068 - Step 5: Solve for x
x = 14,613,363,726,993,068/138,391,648.96 - Step 6: Final answer
x = 105,594,259.75
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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.