Finding the Fourth Proportional to 98,711.10, 136,220.88 and 53,389.12
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Solution
The fourth proportional to 98,711.10, 136,220.88 and 53,389.12 is: 73,676.75
Step by Step Solution
- Step 1: Write the proportion equation
98,711.10 : 136,220.88 = 53,389.12 : x - Step 2: Convert to fraction form
98,711.10/136,220.88 = 53,389.12/x - Step 3: Cross multiply
98,711.10x = 136,220.88 × 53,389.12 - Step 4: Simplify right side
98,711.10x = 7,272,712,908.83 - Step 5: Solve for x
x = 7,272,712,908.83/98,711.10 - Step 6: Final answer
x = 73,676.75
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1.5x scale
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.