Finding the Fourth Proportional to 100,296,731.12, 138,350,848.30 and 63,068,091.08
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Solution
The fourth proportional to 100,296,731.12, 138,350,848.30 and 63,068,091.08 is: 86,997,091.57
Step by Step Solution
- Step 1: Write the proportion equation
100,296,731.12 : 138,350,848.30 = 63,068,091.08 : x - Step 2: Convert to fraction form
100,296,731.12/138,350,848.30 = 63,068,091.08/x - Step 3: Cross multiply
100,296,731.12x = 138,350,848.30 × 63,068,091.08 - Step 4: Simplify right side
100,296,731.12x = 8,725,523,900,730,240 - Step 5: Solve for x
x = 8,725,523,900,730,240/100,296,731.12 - Step 6: Final answer
x = 86,997,091.57
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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.