Finding the Fourth Proportional to 81,080.19, 121,088.07 and 69,106.41
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Solution
The fourth proportional to 81,080.19, 121,088.07 and 69,106.41 is: 103,206.00
Step by Step Solution
- Step 1: Write the proportion equation
81,080.19 : 121,088.07 = 69,106.41 : x - Step 2: Convert to fraction form
81,080.19/121,088.07 = 69,106.41/x - Step 3: Cross multiply
81,080.19x = 121,088.07 × 69,106.41 - Step 4: Simplify right side
81,080.19x = 8,367,961,811.53 - Step 5: Solve for x
x = 8,367,961,811.53/81,080.19 - Step 6: Final answer
x = 103,206.00
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.