Finding the Fourth Proportional to 210,004.05, 315,006.08 and 121,430.55
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Solution
The fourth proportional to 210,004.05, 315,006.08 and 121,430.55 is: 182,145.83
Step by Step Solution
- Step 1: Write the proportion equation
210,004.05 : 315,006.08 = 121,430.55 : x - Step 2: Convert to fraction form
210,004.05/315,006.08 = 121,430.55/x - Step 3: Cross multiply
210,004.05x = 315,006.08 × 121,430.55 - Step 4: Simplify right side
210,004.05x = 38,251,360,940.59 - Step 5: Solve for x
x = 38,251,360,940.59/210,004.05 - Step 6: Final answer
x = 182,145.83
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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.