Finding the Fourth Proportional to 107,220.68, 147,961.68 and 61,897.13
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Solution
The fourth proportional to 107,220.68, 147,961.68 and 61,897.13 is: 85,416.38
Step by Step Solution
- Step 1: Write the proportion equation
107,220.68 : 147,961.68 = 61,897.13 : x - Step 2: Convert to fraction form
107,220.68/147,961.68 = 61,897.13/x - Step 3: Cross multiply
107,220.68x = 147,961.68 × 61,897.13 - Step 4: Simplify right side
107,220.68x = 9,158,402,370.06 - Step 5: Solve for x
x = 9,158,402,370.06/107,220.68 - Step 6: Final answer
x = 85,416.38
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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.