Finding the Fourth Proportional to 154,603.36, 213,355.32 and 86,619.88
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Solution
The fourth proportional to 154,603.36, 213,355.32 and 86,619.88 is: 119,536.94
Step by Step Solution
- Step 1: Write the proportion equation
154,603.36 : 213,355.32 = 86,619.88 : x - Step 2: Convert to fraction form
154,603.36/213,355.32 = 86,619.88/x - Step 3: Cross multiply
154,603.36x = 213,355.32 × 86,619.88 - Step 4: Simplify right side
154,603.36x = 18,480,812,215.76 - Step 5: Solve for x
x = 18,480,812,215.76/154,603.36 - Step 6: Final answer
x = 119,536.94
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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.