Finding the Fourth Proportional to 138,346.30, 207,386.61 and 88,285.06
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Solution
The fourth proportional to 138,346.30, 207,386.61 and 88,285.06 is: 132,342.82
Step by Step Solution
- Step 1: Write the proportion equation
138,346.30 : 207,386.61 = 88,285.06 : x - Step 2: Convert to fraction form
138,346.30/207,386.61 = 88,285.06/x - Step 3: Cross multiply
138,346.30x = 207,386.61 × 88,285.06 - Step 4: Simplify right side
138,346.30x = 18,309,139,307.05 - Step 5: Solve for x
x = 18,309,139,307.05/138,346.30 - Step 6: Final answer
x = 132,342.82
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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.