Finding the Fourth Proportional to 128,750,579.61, 177,680,472.15 and 73,757,064.93
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Solution
The fourth proportional to 128,750,579.61, 177,680,472.15 and 73,757,064.93 is: 101,787,426.21
Step by Step Solution
- Step 1: Write the proportion equation
128,750,579.61 : 177,680,472.15 = 73,757,064.93 : x - Step 2: Convert to fraction form
128,750,579.61/177,680,472.15 = 73,757,064.93/x - Step 3: Cross multiply
128,750,579.61x = 177,680,472.15 × 73,757,064.93 - Step 4: Simplify right side
128,750,579.61x = 13,105,190,121,160,608 - Step 5: Solve for x
x = 13,105,190,121,160,608/128,750,579.61 - Step 6: Final answer
x = 101,787,426.21
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.