Finding the Fourth Proportional to 139,507.84, 192,518.56 and 75,847.28
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Solution
The fourth proportional to 139,507.84, 192,518.56 and 75,847.28 is: 104,668.02
Step by Step Solution
- Step 1: Write the proportion equation
139,507.84 : 192,518.56 = 75,847.28 : x - Step 2: Convert to fraction form
139,507.84/192,518.56 = 75,847.28/x - Step 3: Cross multiply
139,507.84x = 192,518.56 × 75,847.28 - Step 4: Simplify right side
139,507.84x = 14,602,009,125.52 - Step 5: Solve for x
x = 14,602,009,125.52/139,507.84 - Step 6: Final answer
x = 104,668.02
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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.