Finding the Fourth Proportional to 130,639,923.65, 195,964,129.68 and 38,515,936.45
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Solution
The fourth proportional to 130,639,923.65, 195,964,129.68 and 38,515,936.45 is: 57,775,155.97
Step by Step Solution
- Step 1: Write the proportion equation
130,639,923.65 : 195,964,129.68 = 38,515,936.45 : x - Step 2: Convert to fraction form
130,639,923.65/195,964,129.68 = 38,515,936.45/x - Step 3: Cross multiply
130,639,923.65x = 195,964,129.68 × 38,515,936.45 - Step 4: Simplify right side
130,639,923.65x = 7,547,741,965,405,008 - Step 5: Solve for x
x = 7,547,741,965,405,008/130,639,923.65 - Step 6: Final answer
x = 57,775,155.97
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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.