Finding the Fourth Proportional to 91,390.19, 126,130.20 and 51,106.20
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Solution
The fourth proportional to 91,390.19, 126,130.20 and 51,106.20 is: 70,533.12
Step by Step Solution
- Step 1: Write the proportion equation
91,390.19 : 126,130.20 = 51,106.20 : x - Step 2: Convert to fraction form
91,390.19/126,130.20 = 51,106.20/x - Step 3: Cross multiply
91,390.19x = 126,130.20 × 51,106.20 - Step 4: Simplify right side
91,390.19x = 6,446,035,227.24 - Step 5: Solve for x
x = 6,446,035,227.24/91,390.19 - Step 6: Final answer
x = 70,533.12
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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.