Finding the Fourth Proportional to 115,378.68, 159,237.18 and 66,970.26
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Solution
The fourth proportional to 115,378.68, 159,237.18 and 66,970.26 is: 92,427.43
Step by Step Solution
- Step 1: Write the proportion equation
115,378.68 : 159,237.18 = 66,970.26 : x - Step 2: Convert to fraction form
115,378.68/159,237.18 = 66,970.26/x - Step 3: Cross multiply
115,378.68x = 159,237.18 × 66,970.26 - Step 4: Simplify right side
115,378.68x = 10,664,155,346.27 - Step 5: Solve for x
x = 10,664,155,346.27/115,378.68 - Step 6: Final answer
x = 92,427.43
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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.