Finding the Fourth Proportional to 122,420.56, 183,656.76 and 39,372.88
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Solution
The fourth proportional to 122,420.56, 183,656.76 and 39,372.88 is: 59,067.66
Step by Step Solution
- Step 1: Write the proportion equation
122,420.56 : 183,656.76 = 39,372.88 : x - Step 2: Convert to fraction form
122,420.56/183,656.76 = 39,372.88/x - Step 3: Cross multiply
122,420.56x = 183,656.76 × 39,372.88 - Step 4: Simplify right side
122,420.56x = 7,231,095,572.67 - Step 5: Solve for x
x = 7,231,095,572.67/122,420.56 - Step 6: Final answer
x = 59,067.66
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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.