Finding the Fourth Proportional to 98,657.18, 136,146.74 and 53,335.20
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Solution
The fourth proportional to 98,657.18, 136,146.74 and 53,335.20 is: 73,602.48
Step by Step Solution
- Step 1: Write the proportion equation
98,657.18 : 136,146.74 = 53,335.20 : x - Step 2: Convert to fraction form
98,657.18/136,146.74 = 53,335.20/x - Step 3: Cross multiply
98,657.18x = 136,146.74 × 53,335.20 - Step 4: Simplify right side
98,657.18x = 7,261,413,607.25 - Step 5: Solve for x
x = 7,261,413,607.25/98,657.18 - Step 6: Final answer
x = 73,602.48
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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.