Finding the Fourth Proportional to 98,115.18, 135,395.19 and 55,671.18
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Solution
The fourth proportional to 98,115.18, 135,395.19 and 55,671.18 is: 76,824.10
Step by Step Solution
- Step 1: Write the proportion equation
98,115.18 : 135,395.19 = 55,671.18 : x - Step 2: Convert to fraction form
98,115.18/135,395.19 = 55,671.18/x - Step 3: Cross multiply
98,115.18x = 135,395.19 × 55,671.18 - Step 4: Simplify right side
98,115.18x = 7,537,609,993.62 - Step 5: Solve for x
x = 7,537,609,993.62/98,115.18 - Step 6: Final answer
x = 76,824.10
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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.