Finding the Fourth Proportional to 130,352.13, 179,844.10 and 72,982.99
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Solution
The fourth proportional to 130,352.13, 179,844.10 and 72,982.99 is: 100,693.10
Step by Step Solution
- Step 1: Write the proportion equation
130,352.13 : 179,844.10 = 72,982.99 : x - Step 2: Convert to fraction form
130,352.13/179,844.10 = 72,982.99/x - Step 3: Cross multiply
130,352.13x = 179,844.10 × 72,982.99 - Step 4: Simplify right side
130,352.13x = 13,125,560,151.86 - Step 5: Solve for x
x = 13,125,560,151.86/130,352.13 - Step 6: Final answer
x = 100,693.10
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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.