Finding the Fourth Proportional to 115,622.75, 159,585.12 and 70,291.13
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Solution
The fourth proportional to 115,622.75, 159,585.12 and 70,291.13 is: 97,017.39
Step by Step Solution
- Step 1: Write the proportion equation
115,622.75 : 159,585.12 = 70,291.13 : x - Step 2: Convert to fraction form
115,622.75/159,585.12 = 70,291.13/x - Step 3: Cross multiply
115,622.75x = 159,585.12 × 70,291.13 - Step 4: Simplify right side
115,622.75x = 11,217,417,618.06 - Step 5: Solve for x
x = 11,217,417,618.06/115,622.75 - Step 6: Final answer
x = 97,017.39
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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.