Finding the Fourth Proportional to 142,801.24, 197,070.96 and 86,201.68
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Solution
The fourth proportional to 142,801.24, 197,070.96 and 86,201.68 is: 118,961.49
Step by Step Solution
- Step 1: Write the proportion equation
142,801.24 : 197,070.96 = 86,201.68 : x - Step 2: Convert to fraction form
142,801.24/197,070.96 = 86,201.68/x - Step 3: Cross multiply
142,801.24x = 197,070.96 × 86,201.68 - Step 4: Simplify right side
142,801.24x = 16,987,847,831.21 - Step 5: Solve for x
x = 16,987,847,831.21/142,801.24 - Step 6: Final answer
x = 118,961.49
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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.