Finding the Fourth Proportional to 121,209.91, 181,566.99 and 98,800.45
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Solution
The fourth proportional to 121,209.91, 181,566.99 and 98,800.45 is: 147,998.63
Step by Step Solution
- Step 1: Write the proportion equation
121,209.91 : 181,566.99 = 98,800.45 : x - Step 2: Convert to fraction form
121,209.91/181,566.99 = 98,800.45/x - Step 3: Cross multiply
121,209.91x = 181,566.99 × 98,800.45 - Step 4: Simplify right side
121,209.91x = 17,938,900,317.15 - Step 5: Solve for x
x = 17,938,900,317.15/121,209.91 - Step 6: Final answer
x = 147,998.63
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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.