Finding the Fourth Proportional to 128,802.87, 177,542.58 and 101,534.49
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Solution
The fourth proportional to 128,802.87, 177,542.58 and 101,534.49 is: 139,955.70
Step by Step Solution
- Step 1: Write the proportion equation
128,802.87 : 177,542.58 = 101,534.49 : x - Step 2: Convert to fraction form
128,802.87/177,542.58 = 101,534.49/x - Step 3: Cross multiply
128,802.87x = 177,542.58 × 101,534.49 - Step 4: Simplify right side
128,802.87x = 18,026,695,313.58 - Step 5: Solve for x
x = 18,026,695,313.58/128,802.87 - Step 6: Final answer
x = 139,955.70
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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.