Finding the Fourth Proportional to 97,139.36, 145,482.24 and 74,775.26
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Solution
The fourth proportional to 97,139.36, 145,482.24 and 74,775.26 is: 111,988.31
Step by Step Solution
- Step 1: Write the proportion equation
97,139.36 : 145,482.24 = 74,775.26 : x - Step 2: Convert to fraction form
97,139.36/145,482.24 = 74,775.26/x - Step 3: Cross multiply
97,139.36x = 145,482.24 × 74,775.26 - Step 4: Simplify right side
97,139.36x = 10,878,472,321.38 - Step 5: Solve for x
x = 10,878,472,321.38/97,139.36 - Step 6: Final answer
x = 111,988.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.