Finding the Fourth Proportional to 128,304,071.60, 192,288,145.80 and 51,564,282.80
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Solution
The fourth proportional to 128,304,071.60, 192,288,145.80 and 51,564,282.80 is: 77,278,921.90
Step by Step Solution
- Step 1: Write the proportion equation
128,304,071.60 : 192,288,145.80 = 51,564,282.80 : x - Step 2: Convert to fraction form
128,304,071.60/192,288,145.80 = 51,564,282.80/x - Step 3: Cross multiply
128,304,071.60x = 192,288,145.80 × 51,564,282.80 - Step 4: Simplify right side
128,304,071.60x = 9,915,200,329,118,832 - Step 5: Solve for x
x = 9,915,200,329,118,832/128,304,071.60 - Step 6: Final answer
x = 77,278,921.90
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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.