Finding the Fourth Proportional to 111,411.90, 153,749.07 and 63,666.99
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Solution
The fourth proportional to 111,411.90, 153,749.07 and 63,666.99 is: 87,860.82
Step by Step Solution
- Step 1: Write the proportion equation
111,411.90 : 153,749.07 = 63,666.99 : x - Step 2: Convert to fraction form
111,411.90/153,749.07 = 63,666.99/x - Step 3: Cross multiply
111,411.90x = 153,749.07 × 63,666.99 - Step 4: Simplify right side
111,411.90x = 9,788,740,502.20 - Step 5: Solve for x
x = 9,788,740,502.20/111,411.90 - Step 6: Final answer
x = 87,860.82
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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.