Finding the Fourth Proportional to 128,746,585.20, 193,119,877.80 and 114,716,542.80
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Solution
The fourth proportional to 128,746,585.20, 193,119,877.80 and 114,716,542.80 is: 172,074,814.20
Step by Step Solution
- Step 1: Write the proportion equation
128,746,585.20 : 193,119,877.80 = 114,716,542.80 : x - Step 2: Convert to fraction form
128,746,585.20/193,119,877.80 = 114,716,542.80/x - Step 3: Cross multiply
128,746,585.20x = 193,119,877.80 × 114,716,542.80 - Step 4: Simplify right side
128,746,585.20x = 22,154,044,727,174,472 - Step 5: Solve for x
x = 22,154,044,727,174,472/128,746,585.20 - Step 6: Final answer
x = 172,074,814.20
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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.