Finding the Fourth Proportional to 139,435.45, 192,420.95 and 75,773.09
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Solution
The fourth proportional to 139,435.45, 192,420.95 and 75,773.09 is: 104,566.88
Step by Step Solution
- Step 1: Write the proportion equation
139,435.45 : 192,420.95 = 75,773.09 : x - Step 2: Convert to fraction form
139,435.45/192,420.95 = 75,773.09/x - Step 3: Cross multiply
139,435.45x = 192,420.95 × 75,773.09 - Step 4: Simplify right side
139,435.45x = 14,580,329,962.24 - Step 5: Solve for x
x = 14,580,329,962.24/139,435.45 - Step 6: Final answer
x = 104,566.88
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1.5x scale
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.