Finding the Fourth Proportional to 129,960,009.20, 194,940,013.80 and 53,257,545.20
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Solution
The fourth proportional to 129,960,009.20, 194,940,013.80 and 53,257,545.20 is: 79,886,317.80
Step by Step Solution
- Step 1: Write the proportion equation
129,960,009.20 : 194,940,013.80 = 53,257,545.20 : x - Step 2: Convert to fraction form
129,960,009.20/194,940,013.80 = 53,257,545.20/x - Step 3: Cross multiply
129,960,009.20x = 194,940,013.80 × 53,257,545.20 - Step 4: Simplify right side
129,960,009.20x = 10,382,026,596,242,124 - Step 5: Solve for x
x = 10,382,026,596,242,124/129,960,009.20 - Step 6: Final answer
x = 79,886,317.80
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1.5x scale
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.