Finding the Fourth Proportional to 112,271.67, 154,960.91 and 74,038.09
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Solution
The fourth proportional to 112,271.67, 154,960.91 and 74,038.09 is: 102,189.71
Step by Step Solution
- Step 1: Write the proportion equation
112,271.67 : 154,960.91 = 74,038.09 : x - Step 2: Convert to fraction form
112,271.67/154,960.91 = 74,038.09/x - Step 3: Cross multiply
112,271.67x = 154,960.91 × 74,038.09 - Step 4: Simplify right side
112,271.67x = 11,473,009,801.06 - Step 5: Solve for x
x = 11,473,009,801.06/112,271.67 - Step 6: Final answer
x = 102,189.71
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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.