Finding the Fourth Proportional to 144,624,985.98, 199,594,789.65 and 81,912,240.06
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Solution
The fourth proportional to 144,624,985.98, 199,594,789.65 and 81,912,240.06 is: 113,045,862.81
Step by Step Solution
- Step 1: Write the proportion equation
144,624,985.98 : 199,594,789.65 = 81,912,240.06 : x - Step 2: Convert to fraction form
144,624,985.98/199,594,789.65 = 81,912,240.06/x - Step 3: Cross multiply
144,624,985.98x = 199,594,789.65 × 81,912,240.06 - Step 4: Simplify right side
144,624,985.98x = 16,349,256,324,536,004 - Step 5: Solve for x
x = 16,349,256,324,536,004/144,624,985.98 - Step 6: Final answer
x = 113,045,862.81
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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.