Finding the Fourth Proportional to 106,987.48, 147,640.91 and 59,239.80
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Solution
The fourth proportional to 106,987.48, 147,640.91 and 59,239.80 is: 81,749.92
Step by Step Solution
- Step 1: Write the proportion equation
106,987.48 : 147,640.91 = 59,239.80 : x - Step 2: Convert to fraction form
106,987.48/147,640.91 = 59,239.80/x - Step 3: Cross multiply
106,987.48x = 147,640.91 × 59,239.80 - Step 4: Simplify right side
106,987.48x = 8,746,217,980.22 - Step 5: Solve for x
x = 8,746,217,980.22/106,987.48 - Step 6: Final answer
x = 81,749.92
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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.