Finding the Fourth Proportional to 149,983.79, 207,029.75 and 86,346.95
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Solution
The fourth proportional to 149,983.79, 207,029.75 and 86,346.95 is: 119,188.79
Step by Step Solution
- Step 1: Write the proportion equation
149,983.79 : 207,029.75 = 86,346.95 : x - Step 2: Convert to fraction form
149,983.79/207,029.75 = 86,346.95/x - Step 3: Cross multiply
149,983.79x = 207,029.75 × 86,346.95 - Step 4: Simplify right side
149,983.79x = 17,876,386,004.88 - Step 5: Solve for x
x = 17,876,386,004.88/149,983.79 - Step 6: Final answer
x = 119,188.79
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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.