Finding the Fourth Proportional to 128,518,116.07, 177,358,081.53 and 69,783,256.75
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Solution
The fourth proportional to 128,518,116.07, 177,358,081.53 and 69,783,256.75 is: 96,302,567.44
Step by Step Solution
- Step 1: Write the proportion equation
128,518,116.07 : 177,358,081.53 = 69,783,256.75 : x - Step 2: Convert to fraction form
128,518,116.07/177,358,081.53 = 69,783,256.75/x - Step 3: Cross multiply
128,518,116.07x = 177,358,081.53 × 69,783,256.75 - Step 4: Simplify right side
128,518,116.07x = 12,376,624,540,095,422 - Step 5: Solve for x
x = 12,376,624,540,095,422/128,518,116.07 - Step 6: Final answer
x = 96,302,567.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.