Finding the Fourth Proportional to 172,866.75, 238,556.12 and 93,378.75
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Solution
The fourth proportional to 172,866.75, 238,556.12 and 93,378.75 is: 128,862.68
Step by Step Solution
- Step 1: Write the proportion equation
172,866.75 : 238,556.12 = 93,378.75 : x - Step 2: Convert to fraction form
172,866.75/238,556.12 = 93,378.75/x - Step 3: Cross multiply
172,866.75x = 238,556.12 × 93,378.75 - Step 4: Simplify right side
172,866.75x = 22,276,071,823.56 - Step 5: Solve for x
x = 22,276,071,823.56/172,866.75 - Step 6: Final answer
x = 128,862.68
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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.