Finding the Fourth Proportional to 98,988.17, 136,567.87 and 65,015.06
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Solution
The fourth proportional to 98,988.17, 136,567.87 and 65,015.06 is: 89,697.26
Step by Step Solution
- Step 1: Write the proportion equation
98,988.17 : 136,567.87 = 65,015.06 : x - Step 2: Convert to fraction form
98,988.17/136,567.87 = 65,015.06/x - Step 3: Cross multiply
98,988.17x = 136,567.87 × 65,015.06 - Step 4: Simplify right side
98,988.17x = 8,878,967,416.75 - Step 5: Solve for x
x = 8,878,967,416.75/98,988.17 - Step 6: Final answer
x = 89,697.26
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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.