Finding the Fourth Proportional to 128,435,544, 177,239,134.08 and 75,518,231.04
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Solution
The fourth proportional to 128,435,544, 177,239,134.08 and 75,518,231.04 is: 104,214,031.88
Step by Step Solution
- Step 1: Write the proportion equation
128,435,544 : 177,239,134.08 = 75,518,231.04 : x - Step 2: Convert to fraction form
128,435,544/177,239,134.08 = 75,518,231.04/x - Step 3: Cross multiply
128,435,544x = 177,239,134.08 × 75,518,231.04 - Step 4: Simplify right side
128,435,544x = 13,384,785,876,782,980 - Step 5: Solve for x
x = 13,384,785,876,782,980/128,435,544 - Step 6: Final answer
x = 104,214,031.88
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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.