Finding the Fourth Proportional to 128,750,391.54, 177,680,212.61 and 73,756,876.86
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Solution
The fourth proportional to 128,750,391.54, 177,680,212.61 and 73,756,876.86 is: 101,787,166.66
Step by Step Solution
- Step 1: Write the proportion equation
128,750,391.54 : 177,680,212.61 = 73,756,876.86 : x - Step 2: Convert to fraction form
128,750,391.54/177,680,212.61 = 73,756,876.86/x - Step 3: Cross multiply
128,750,391.54x = 177,680,212.61 × 73,756,876.86 - Step 4: Simplify right side
128,750,391.54x = 13,105,137,561,565,604 - Step 5: Solve for x
x = 13,105,137,561,565,604/128,750,391.54 - Step 6: Final answer
x = 101,787,166.66
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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.